Rename and cleanup

32 files changed, 0 insertions, 1486 deletions

diff --git a/sem1/osc/miniproject/cnasm/Makefile b/sem1/osc/miniproject/cnasm/Makefile
deleted file mode 100644
index 9ace547..0000000
--- a/sem1/osc/miniproject/cnasm/Makefile
+++ /dev/null
@@ -1,30 +0,0 @@
-
-LEX=flex
-YACC=bison
-LIBS=-ly -lfl -lm
-CC=gcc
-
-PROG=regn
-TRASH=lex.yy.c $(PROG).tab.c $(PROG) $(PROG).tab.h $(PROG).output
-
-$(PROG): $(PROG).tab.o lex.yy.o ast.c codegen.c
-		$(CC) -ggdb -o $@ $^ $(LIBS) 
-
-$(PROG).tab.c $(PROG).tab.h: $(PROG).y
-		$(YACC) -d -v $(PROG).y
-
-lex.yy.c: $(PROG).l
-		$(LEX) $(PROG).l
-
-%.o: %.c
-	$(CC) -ggdb -c -o $@ $^
-
-PHONY: clean run
-
-run: $(PROG)
-	./$(PROG)
-
-clean:
-	rm -f *.o
-	rm -f $(TRASH)
-
diff --git a/sem1/osc/miniproject/cnasm/ast.c b/sem1/osc/miniproject/cnasm/ast.c
deleted file mode 100644
index 035b75d..0000000
--- a/sem1/osc/miniproject/cnasm/ast.c
+++ /dev/null
@@ -1,98 +0,0 @@
-#include "ast.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-static ast_node_t *create_empty_node() {
-	ast_node_t *n = malloc(sizeof(ast_node_t));
-	memset(n, 0, sizeof(ast_node_t));
-}
-
-ast_node_t *insert_ctrl(enum ntype t, cond_t *c, ast_node_t *iftrue, ast_node_t *iffalse) {
-	ast_node_t *n = create_empty_node();
-
-	n->t = t;
-	n->flowctrl.condition = c;
-	n->flowctrl.iftrue = iftrue;
-	n->flowctrl.iffalse = iffalse;
-
-	return n;
-}
-
-ast_node_t *insert_for(char *pre, cond_t *c, char *inc, ast_node_t *stuff) {
-	ast_node_t *n = create_empty_node();
-
-	n->t = TFOR;
-	n->forloop.condition = c;
-	n->forloop.pre = pre;
-	n->forloop.inc = inc;
-	n->forloop.stuff = stuff;
-
-	return n;
-}
-
-ast_node_t *insert_stm(ast_node_t *stm, ast_node_t *stm_list) {
-	ast_node_t *n = create_empty_node();
-
-	n->t = TSTM_LIST;
-	n->list.children[0] = stm_list;
-	n->list.children[1] = stm;
-
-	return n;
-}
-ast_node_t *insert_ident(char *ident) {
-	ast_node_t *n = create_empty_node();
-
-	n->t = TIDENT;
-	n->ident = ident;
-
-	return n;
-}
-
-cond_t *insert_cond(uint8_t cmp, char *a, char *b) {
-	cond_t *c = malloc( sizeof(cond_t));
-
-	c->cmp = cmp;
-	c->a = a;
-	c->b = b;
-}
-
-void node_print(ast_node_t *node) {
-	if( !node ){
-		printf("Nil");
-		return;
-	}
-	switch(node->t) {
-		case TSTM_LIST: 
-			printf("Stm_list(");
-			node_print(node->list.children[0]);
-			printf(",");
-			node_print(node->list.children[1]);
-			printf(")");
-			break;
-		case TIF:
-			printf("If");
-			printf("(%s %c %s) {", node->flowctrl.condition->a,
-					node->flowctrl.condition->cmp,
-					node->flowctrl.condition->b);
-			node_print(node->flowctrl.iftrue);
-			printf("}{");
-			node_print(node->flowctrl.iffalse);
-			printf("}");
-			break;
-		case TIDENT:
-			printf("%s", node->ident);
-			break;
-		case TWHILE:
-			printf("while");
-			printf("(%s %c %s) {", node->flowctrl.condition->a,
-					node->flowctrl.condition->cmp,
-					node->flowctrl.condition->b);
-			node_print(node->flowctrl.iftrue);
-			printf("}");
-			break;
-		default:
-			printf("invalid");
-	}
-}
diff --git a/sem1/osc/miniproject/cnasm/ast.h b/sem1/osc/miniproject/cnasm/ast.h
deleted file mode 100644
index 61a8f4f..0000000
--- a/sem1/osc/miniproject/cnasm/ast.h
+++ /dev/null
@@ -1,53 +0,0 @@
-#ifndef AST_HEADER
-#define AST_HEADER
-
-#include <stdbool.h>
-#include <stdint.h>
-
-#define CEQ 0x10
-#define CNEQ CEQ ^ 0x80
-#define CGT 0x20
-#define CLT 0x30
-#define CLEQ CGT ^ 0x80
-#define CGEQ CLT ^ 0x80
-
-enum ntype { TSTM_LIST, TIF, TFOR, TIDENT, TWHILE};
-
-typedef struct cond {
-	uint8_t cmp;
-	char *a;
-	char *b;
-} cond_t;
-
-typedef struct ast_node {
-	enum ntype t;
-	// Dependent on type
-	union {
-		struct {
-			cond_t *condition;
-			struct ast_node *iftrue;
-			struct ast_node *iffalse;
-		} flowctrl;
-		struct {
-			cond_t *condition;
-			char *pre;
-			char *inc;
-			struct ast_node *stuff;
-		} forloop;
-		char *ident;
-		struct {
-			struct ast_node *children[2];
-		} list;
-	};
-} ast_node_t;
-
-ast_node_t *insert_ctrl(enum ntype t, cond_t *c, ast_node_t *iftrue, ast_node_t *iffalse);
-ast_node_t *insert_stm(ast_node_t *stm, ast_node_t *stm_list);
-ast_node_t *insert_ident(char *ident);
-ast_node_t *insert_for(char *pre, cond_t *c, char *inc, ast_node_t *stuff);
-
-cond_t *insert_cond(uint8_t cmp, char *a, char *b);
-
-void node_print(ast_node_t *node);
-
-#endif 
diff --git a/sem1/osc/miniproject/cnasm/codegen.c b/sem1/osc/miniproject/cnasm/codegen.c
deleted file mode 100644
index c995df9..0000000
--- a/sem1/osc/miniproject/cnasm/codegen.c
+++ /dev/null
@@ -1,132 +0,0 @@
-#include "codegen.h"
-
-#include <stdio.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include "ast.h"
-
-static void gencondjmp(FILE *f, cond_t *c, bool neg) {
-	uint8_t cmp = neg ? c->cmp^0x80 : c->cmp;
-	fprintf(f, "cmp %s %s\n", c->a, c->b);
-	switch(cmp) {
-		case CEQ:
-			fprintf(f, "je ");
-			break;
-		case CNEQ:
-			fprintf(f, "jne ");
-			break;
-		case CGT:
-			fprintf(f, "jg ");
-			break;
-		case CLT:
-			fprintf(f, "jl ");
-			break;
-		case CLEQ:
-			fprintf(f, "jle ");
-			break;
-		case CGEQ:
-			fprintf(f, "jge ");
-			break;
-		default:
-			fprintf(stderr, "Invalid cmp type %x", cmp);
-			fprintf(f, "jmp ");
-	}
-}
-
-static void genif(FILE *f, struct genctx *ctx, ast_node_t *n) {
-	bool doElse = n->flowctrl.iffalse;
-	// Create conditional jump
-	gencondjmp(f, n->flowctrl.condition, true);
-	if( doElse ) {
-		fprintf(f, "else_%d\n", ctx->nested);
-	} else {
-		fprintf(f, "end_%d\n", ctx->nested);
-	}
-
-	struct genctx octx = { ctx->nested+1 };
-	// Paste code
-	gentree(f, &octx, n->flowctrl.iftrue);
-	
-	// Do else
-	if( doElse ) {
-		fprintf(f, "jmp end_%d\n", ctx->nested);
-		fprintf(f, "else_%d:\n", ctx->nested);
-		gentree(f, &octx, n->flowctrl.iffalse);
-	}
-
-	// End block
-	fprintf(f, "end_%d:\n", ctx->nested);
-}
-
-static void genwhile(FILE *f, struct genctx *ctx, ast_node_t *n) {
-	// Create loop label
-	fprintf(f, "loop_%d:\n", ctx->nested);
-
-	// Create conditional jump
-	gencondjmp(f, n->flowctrl.condition, true);
-	fprintf(f, "end_%d\n", ctx->nested);
-
-	struct genctx octx = { ctx->nested+1 };
-	// Paste code
-	gentree(f, &octx, n->flowctrl.iftrue);
-
-	// Jump to start
-	fprintf(f, "jmp loop_%d\n", ctx->nested);
-	
-	// End block
-	fprintf(f, "end_%d:\n", ctx->nested);
-}
-
-static void genfor(FILE *f, struct genctx *ctx, ast_node_t *n) {
-	// Do pre stuff
-	fprintf(f, "%s\n", n->forloop.pre);
-
-	// Create loop label
-	fprintf(f, "loop_%d:\n", ctx->nested);
-
-	// Create conditional jump
-	gencondjmp(f, n->flowctrl.condition, true);
-	fprintf(f, "end_%d\n", ctx->nested);
-
-	struct genctx octx = { ctx->nested+1 };
-	// Paste code
-	gentree(f, &octx, n->forloop.stuff);
-
-	// Do inc stuff
-	fprintf(f, "%s\n", n->forloop.inc);
-	// Jump to start
-	fprintf(f, "jmp loop_%d\n", ctx->nested);
-	
-	// End block
-	fprintf(f, "end_%d:\n", ctx->nested);
-}
-
-void gentree(FILE *f, struct genctx *ctx, ast_node_t *n) {
-	if( !n ) {
-		return;
-	}
-	if( ctx == NULL ) {
-		ctx = malloc(sizeof(struct genctx));
-		ctx->nested = 0;
-	}
-	switch(n->t) {
-		case TSTM_LIST: 
-			gentree(f, ctx, n->list.children[0]);
-			gentree(f, ctx, n->list.children[1]);
-			break;
-		case TIF:
-			genif(f, ctx, n);
-			break;
-		case TIDENT:
-			fprintf(f, "%s\n", n->ident);
-			break;
-		case TFOR:
-			genfor(f, ctx, n);
-			break;
-		case TWHILE:
-			genwhile(f, ctx, n);
-			break;
-		default:
-			return;
-	}
-}
diff --git a/sem1/osc/miniproject/cnasm/codegen.h b/sem1/osc/miniproject/cnasm/codegen.h
deleted file mode 100644
index 24ad6c4..0000000
--- a/sem1/osc/miniproject/cnasm/codegen.h
+++ /dev/null
@@ -1,14 +0,0 @@
-
-#ifndef CODEGEN_HEADER
-#define CODEGEN_HEADER
-
-#include <stdio.h>
-#include "ast.h"
-
-struct genctx {
-	unsigned int nested;
-};
-
-void gentree(FILE *f, struct genctx *ctx, ast_node_t *n);
-
-#endif 
diff --git a/sem1/osc/miniproject/cnasm/regn.l b/sem1/osc/miniproject/cnasm/regn.l
deleted file mode 100644
index 00876d6..0000000
--- a/sem1/osc/miniproject/cnasm/regn.l
+++ /dev/null
@@ -1,39 +0,0 @@
-%{
-#include <math.h>
-#include <string.h>
-#include "regn.tab.h"
-#include "ast.h"
-%}
-
-id		[a-zA-Z0-9_;]([^\n=><(){}])*
-if		if[ \t]*
-else	else[ \t]*
-for		for[ \t]*
-while	while[ \t]*
-
-%%
-
-{if} {return IFF;};
-{else} {return EELSE;};
-{for} {return FFOR;};
-{while} {return WHILE;};
-"(" {return LP;};
-")" {return RP;};
-"{" {return LCP;};
-"}" {return RCP;};
-"<" {yylval.cmp = CLT; return CMP;};
-">" {yylval.cmp = CGT; return CMP;};
-"=" {yylval.cmp = CEQ; return CMP;};
-"!=" {yylval.cmp = CNEQ; return CMP;};
-{id} {yylval.string = strdup(yytext);return ID;};
-[1-9][0-9]* {yylval.string = yytext;return NO;};
-
-
-
-[ \t\n] ;
-
-.           {return yytext[0];} 
-
-%%
-
-// TODO match normal assembler
diff --git a/sem1/osc/miniproject/cnasm/regn.y b/sem1/osc/miniproject/cnasm/regn.y
deleted file mode 100644
index b72d440..0000000
--- a/sem1/osc/miniproject/cnasm/regn.y
+++ /dev/null
@@ -1,81 +0,0 @@
-%{
-#include "ast.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include "codegen.h"
-
-#define CLEAN_BOTH 2
-#define CLEAN_DST 1
-
-char *strconcat(char *dst, char *src, unsigned int clean) {
-	size_t dstlen = strlen(dst) + 1;
-	size_t srclen = strlen(src) + 1;
-
-	// Create new duplicate
-	char *new = malloc(( dstlen + srclen ) * sizeof(char));
-
-	// Copy stuff
-	memcpy(new, dst, dstlen);
-	strcat(new, src);
-
-	// Free old one
-	if( clean-- ) {
-		free(dst);
-
-		if( clean ) {
-			free(src);
-		}
-	}
-	return new;
-}
-
-// Trace node
-
-%}
-
-%token IFF EELSE FFOR RP RCP RSP LP LCP LSP ID COLON CMP NO WHILE
-
-%union {
-	char				*string;
-	struct ast_node		*node;
-	struct cond			*condition;
-	uint8_t				cmp;
-}
-
-%type <string>	ID 
-%type <node>	statement stm_list 
-%type <cmp>		CMP
-%type <condition> condition
-
-%%
-
-program: stm_list 			{gentree(stdout, NULL, $1);printf("\n");};
-
-stm_list: statement				{ $$ = $1; }
-		| stm_list statement 	{ $$ = insert_stm($2, $1); };
-
-condition: ID CMP ID		{ $$ = insert_cond($2, $1, $3); }
-		 | ID				{ $$ = insert_cond(CNEQ, $1, "0");};
-
-statement: ID																{$$ = insert_ident($1);}
-		 | IFF LP condition RP LCP stm_list RCP								{$$ = insert_ctrl(TIF, $3, $6, NULL);}
-		 | IFF LP condition RP LCP stm_list RCP	EELSE LCP stm_list RCP		{$$ = insert_ctrl(TIF, $3, $6, $10);}
-		 | WHILE LP condition RP LCP stm_list RCP							{$$ = insert_ctrl(TWHILE, $3, $6, NULL);}
-		 | FFOR LP ID LP condition LP ID RP LCP stm_list RCP				{$$ = insert_for($3, $5, $7, $10);};
-
-%%
-
-
-int main() {
-
-	/*for(;;) {
-		int t = yylex();
-		printf("yylex: %d\n", t);
-	} */
-
-	yyparse(); 
-}
-
diff --git a/sem1/osc/miniproject/cnasm/test.asm b/sem1/osc/miniproject/cnasm/test.asm
deleted file mode 100644
index 77a3572..0000000
--- a/sem1/osc/miniproject/cnasm/test.asm
+++ /dev/null
@@ -1,39 +0,0 @@
-global _start
-
-section .data
-        align 2
-        ; String, which is just a collection of bytes, 0xA is newline
-        str:     db 'Hello, world!',0xA
-        strLen:  equ $-str
-
-section .bss
-
-section .text
-        _start:
-
-        mov     edx, strLen     ; Arg three: the length of the string
-        mov     ecx, str        ; Arg two: the address of the string
-        mov     ebx, 1          ; Arg one: file descriptor, in this case stdout
-        mov     eax, 4          ; Syscall number, in this case the 
-        int     0x80            ; Interrupt 0x80        
-
-		if ( hej = 10 ) {
-			mov     ebx, 0          ; Arg one: the status
-			mov     eax, 1          ; Syscall number:
-			if(cool) {
-				int     0x80
-			}
-		} else {
-			while( lol ) {
-				mov hej, 0
-			}
-		}
-		while( lol ) {
-			mov hej, 0
-		}
-
-		hej
-
-		for(mov a, 0( a < 100( a++ ) {
-			test
-		}
diff --git a/sem1/osc/mm1/.gitignore b/sem1/osc/mm1/.gitignore
deleted file mode 100644
index b18a498..0000000
--- a/sem1/osc/mm1/.gitignore
+++ /dev/null
@@ -1,10 +0,0 @@
-jmod.ko
-.jmod.ko.cmd
-jmod.mod.c
-jmod.mod.o
-.jmod.mod.o.cmd
-jmod.o
-.jmod.o.cmd
-modules.order
-Module.symvers
-.tmp_versions
diff --git a/sem1/osc/mm1/mm1/Makefile b/sem1/osc/mm1/mm1/Makefile
deleted file mode 100644
index 13c8e62..0000000
--- a/sem1/osc/mm1/mm1/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-obj-m += jmod.o
-
-all:
-	make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) modules
-clean:
-	make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) clean
-
diff --git a/sem1/osc/mm1/mm1/Readme.md b/sem1/osc/mm1/mm1/Readme.md
deleted file mode 100644
index fcc6cb3..0000000
--- a/sem1/osc/mm1/mm1/Readme.md
+++ /dev/null
@@ -1,34 +0,0 @@
-# Opgaver til operativ systemer
-
-Ligenu er det ikke delt op i mapper. 
-
-## Kør mini kernel modul
-
-Compile med make.
-Husk at peg makefile på din kernel modul mappe.
-Denne er testet på ubuntu server 19.04.
-
-```
-make
-```
-
-Nu burde der være kommet et jmod.ko som kan loades med.
-
-```
-sudo insmod jmod.ko
-```
-
-Hvis du får permission denied kan du få flere information ved at checke `dmesg` loggen.
-
-Nu kan du hente major number ind fra dmesg. Led efter `COOL_MODULE:`.
-Dette nummer bruger du til at assign den en node
-
-```
-sudo mknod /dev/cooldev c MAJOR 0
-```
-
-Dette vil map kernel-modul/driver til cooldev i /dev/ mappen.
-Husk at skriv til MAJOR nummer fra `dmesg` i stedet for MAJOR.
-
-Hvis man læser man pagen kan man se at det bliver lavet som en character unbuffered file. 
-MINOR nummeret er 0 da vores driver alligevel ikke bruger det til noget.
diff --git a/sem1/osc/mm1/mm1/jmod.c b/sem1/osc/mm1/mm1/jmod.c
deleted file mode 100644
index a07077c..0000000
--- a/sem1/osc/mm1/mm1/jmod.c
+++ /dev/null
@@ -1,70 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <asm/uaccess.h>
-
-static int major_num;
-static int busy;
-
-
-static int cool_open(struct inode *inode, struct file *file) {
-	/* Check if we are already serving someone */
-	if (busy) {
-		return -EBUSY;
-	}
-
-	busy = 1;
-	return 0;
-}
-
-static int cool_release (struct inode *inode, struct file *file) {
-	busy = 0;
-
-	return 0;
-}
-
-static ssize_t cool_read (struct file *filp, char *buffer, size_t len, loff_t *offset) {
-
-	char str[12] = "hej med dig";
-	int i;
-
-	for (i = 0; i < len; i++) {
-		put_user(str[i % 12], buffer++);
-	}
-
-	return i;
-}
-
-static struct file_operations file_ops = {
-	.owner = THIS_MODULE,
-	.read = cool_read,
-	.open = cool_open,
-	.release = cool_release
-};
-
-static int __init jmod_init(void) 
-{
-	printk(KERN_INFO "COOL_MODULE: Registering cooldev\n");
-	
-	major_num = register_chrdev(0, "cooldev", &file_ops);
-	if (major_num < 0) {
-		printk(KERN_ERR "COOL_MODULE: Could not register major\n");
-		return 1;
-	}
-
-	printk(KERN_INFO "COOL_MODULE: Got major %d\n", major_num);
-
-	return 0;
-}
-
-
-static void __exit jmod_exit(void) 
-{
-	printk(KERN_INFO "COOL_MODULE: Nou moe\n");
-	unregister_chrdev(major_num, "cooldev");
-}
-
-module_init( jmod_init );
-module_exit( jmod_exit );
-
diff --git a/sem1/osc/mm1/mm2/tprog.c b/sem1/osc/mm1/mm2/tprog.c
deleted file mode 100644
index 377555f..0000000
--- a/sem1/osc/mm1/mm2/tprog.c
+++ /dev/null
@@ -1,71 +0,0 @@
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/time.h>
-
-#define STARTSEC 10
-#define ENDUSEC 500000
-#define SPEED 0.8
-
-struct itimerval timer;
-
-void timer_handler(int signum) {
-    /* Handy structure reference */
-    struct timeval *tv = &timer.it_value;
-    printf("Hey we hit the alarm\n\a");
-
-    /* Calculate new alarm */
-    tv->tv_sec *= SPEED;
-    if (tv->tv_sec == 0) {
-	/* If tv_usec is 0 set i to 1 sec otherwise half it */
-	if (tv->tv_usec == 0) {
-	    tv->tv_usec = 999999;
-	} else if (tv->tv_usec > ENDUSEC) {
-	    tv->tv_usec *= SPEED;
-	    if (tv->tv_usec < ENDUSEC) {
-		tv->tv_usec = ENDUSEC;
-	    }
-	} else {
-	    /* Return letting the timer be set to ENDUSEC */
-	    return;
-	}
-    }
-
-    printf("Set to %d and %d\n", timer.it_value.tv_sec, timer.it_value.tv_usec);
-    /* Set alarm */
-    int err = setitimer(ITIMER_REAL, &timer, NULL);
-    if (err) {
-	printf("Hey we got an error guys\n");
-	exit(1);
-    }
-}
-
-int main() {
-    /* Setup handler for timer */
-    struct sigaction sa;
-    memset(&sa, 0, sizeof(sa)); /* Remeber to set all fields to zero */
-
-    sa.sa_handler = &timer_handler;
-    sigaction(SIGALRM, &sa, NULL);
-
-    /* Setup timer values */
-    timer.it_value.tv_sec = STARTSEC;
-    timer.it_value.tv_usec = 0;
-
-    timer.it_interval.tv_sec = 0;
-    timer.it_interval.tv_usec = ENDUSEC;
-
-    /* Start the timer */
-    setitimer(ITIMER_REAL, &timer, NULL);
-
-    /* Select signals */
-    sigset_t sigset;
-    sigemptyset(&sigset);
-    sigaddset(&sigset, SIGTERM);
-
-    /* Wait for termination */
-    sigwait(&sigset, NULL);
-
-    return 0;
-}
diff --git a/sem1/osc/mm10/Makefile b/sem1/osc/mm10/Makefile
deleted file mode 100644
index 99bd635..0000000
--- a/sem1/osc/mm10/Makefile
+++ /dev/null
@@ -1,25 +0,0 @@
-opgaver=opg1 opg3 opg4
-
-LEX=flex
-CC=gcc
-LINKFLAG=-lfl
-DEFAULT_TARGET=all
-
-%: %.yy.c
-	$(CC) -o $@ $^ $(LINKFLAG)
-
-%.o: %.c
-	$(CC) -c -o $@ $^
-
-%.yy.c: %.l
-	$(LEX) -o $@ $^
-
-all: $(opgaver)
-
-phony: all clean run
-
-run: $(BIN)
-	./$(BIN)
-
-clean:
-	rm -f $(opgaver)
diff --git a/sem1/osc/mm10/opg1.l b/sem1/osc/mm10/opg1.l
deleted file mode 100644
index b5cb478..0000000
--- a/sem1/osc/mm10/opg1.l
+++ /dev/null
@@ -1,22 +0,0 @@
-%{
-
-#include <stdio.h>
-
-%}
-
-ting		(a|b)abcd
-
-%%
-
-{ting}		{ printf("Fandt ting %s\n", yytext); return 1; }
-.			{ printf("Meh"); }
-
-%%
-
-int main(void) {
-
-	printf("yylex: %d\n", yylex());
-
-	return 0;
-	
-}
diff --git a/sem1/osc/mm10/opg3.l b/sem1/osc/mm10/opg3.l
deleted file mode 100644
index 1c4b9c7..0000000
--- a/sem1/osc/mm10/opg3.l
+++ /dev/null
@@ -1,36 +0,0 @@
-%{
-
-#include <stdio.h>
-
-#define BEGIN_T 1
-#define END_T 2
-#define NUM_T 3
-#define VAR_T 4
-
-%}
-
-VAR			[a-zA-Z][a-zA-Z\_\-0-9]*
-TAL			[0-9]+
-
-%%
-
-begin		{printf("Found a BEGIN\n"); return BEGIN_T;}
-end			{printf("Found a END\n"); return END_T;}
-{VAR}		{printf("Found a variable %s\n", yytext); return VAR_T;}
-{TAL}		{printf("Found a number %d\n", strtol(yytext, NULL, 10)); return NUM_T;}
-
-%%
-
-int main(void) {
-
-	for(;;) {
-		int t = yylex();
-		printf("yylex: %d\n", t);
-		if( t == END_T ) {
-			break;
-		}
-	}
-
-	return 0;
-	
-}
diff --git a/sem1/osc/mm10/opg4.l b/sem1/osc/mm10/opg4.l
deleted file mode 100644
index aeb73b1..0000000
--- a/sem1/osc/mm10/opg4.l
+++ /dev/null
@@ -1,101 +0,0 @@
-%{
-
-#include <stdio.h>
-#include <stdint.h>
-
-#define BEGIN_T 1
-#define END_T 2
-#define NUM_T 3
-#define VAR_T 4
-#define HASHSIZE 100
-
-typedef struct symnode_struct {
-	struct symnode_struct *next;
-	char *name;
-} symnode_t;
-
-symnode_t *sym_insert(char *var);
-symnode_t *sym_lookup(char *var);
-
-%}
-
-VAR			[a-zA-Z][a-zA-Z\_\-0-9]*
-TAL			[0-9]+
-
-%%
-
-begin		{printf("Found a BEGIN\n"); return BEGIN_T;}
-end			{printf("Found a END\n"); return END_T;}
-{VAR}		{printf("Found a variable %s\n", yytext); 
-				if( !sym_lookup(yytext) ) { 
-					printf("Not found inserting\n");
-					sym_insert(yytext);
-				}
-				return VAR_T;}
-{TAL}		{printf("Found a number %d\n", strtol(yytext, NULL, 10)); return NUM_T;}
-
-%%
-
-symnode_t *symlist[HASHSIZE];
-
-unsigned int hash(char *s) {
-	uint32_t hv = 0;
-	for( int i = 0; s[i] != '\0'; i++ ) {
-		// take MSB 6 bits of hv and xors with LSB of s[i]
-		uint32_t v = ( hv >> 26 ) ^ (s[i] & 0x3f);
-
-		// Push those back on hv
-		hv = (hv << 4) | v;
-	}
-	// Return appropriate size
-	return hv % HASHSIZE;
-}
-
-
-symnode_t *sym_insert(char *var) {
-	unsigned int index = hash(var);
-
-	// Save old value
-	symnode_t *oldSym = symlist[index];
-
-	// Make new
-	symlist[index] = malloc(sizeof(symnode_t));
-	if( symlist[index] == NULL ) {
-		// If malloc failed
-		symlist[index] = oldSym;
-		return NULL;
-	}
-
-	// Link old one
-	symlist[index]->next = oldSym;
-	symlist[index]->name = var;
-
-	return symlist[index];
-}
-
-symnode_t *sym_lookup(char *var) {
-	unsigned int index = hash(var);
-	symnode_t *n = symlist[index];
-
-	// Look trough list
-	while(n != NULL && strcmp(n->name, var) != 0) {
-		n = n->next;
-	}
-
-	return n;
-}
-
-
-int main(void) {
-
-	for(;;) {
-		int t = yylex();
-		printf("yylex: %d\n", t);
-		if( t == END_T ) {
-			break;
-		}
-	}
-
-	return 0;
-	
-}
diff --git a/sem1/osc/mm10/opgaver.md b/sem1/osc/mm10/opgaver.md
deleted file mode 100644
index b8c8186..0000000
--- a/sem1/osc/mm10/opgaver.md
+++ /dev/null
@@ -1,55 +0,0 @@
-# MM10
-
-## Opgave 1
-
-A)
-
-<img src="./stateMachine.png"></img>
-
-B)
-
-Kan ses i den tilhørende opg1.l fil.
-For at compile kør:
-
-```
-make run BIN=opg1
-```
-
-C)
-
-```
-aabcd
-
-Fandt ting aabcd
-yylex: 1
-```
-
-```
-afggfd
-
-MehMehMehMehMehMeh
-```
-
-## Opgave 2
-
-Regulære udtryk for:
-
-```
-c kommentarer: \/\/.*\n
-real konstant: [-+]?[0-9]*(\.[0-9]+)?(e\+[0-9]+)?
-starter med store: [A-Z][a-zA-z]+
-```
-
-## Opgave 3
-
-Dette laver jeg i opg3.l filen.
-
-## Opgave 4
-
-Se opg4.l fil og kør med.
-
-```
-make run BIN=opg4
-```
-
-
diff --git a/sem1/osc/mm10/stateMachine.png b/sem1/osc/mm10/stateMachine.png
deleted file mode 100644
index 08c5bf2..0000000
--- a/sem1/osc/mm10/stateMachine.png
+++ /dev/null
diff --git a/sem1/osc/mm11/opgaver.md b/sem1/osc/mm11/opgaver.md
deleted file mode 100644
index 276236a..0000000
--- a/sem1/osc/mm11/opgaver.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# Opgave 1
-
-Mange af dem er okay.
-
-```
-<program> ::= 'program''(' <ident> ')' <statementlist> 'end'.
-<statementlist> ::= <statement> <statementlist> | e
-<statement> ::= <ident> '=' <exp>;
-
-<exp> ::= <term> <expB>
-<expB> ::= <termopr> <term> <expB> | e
-
-<term> ::= <factor> <termB>
-<termB> ::= <factoropr> <factor> <termB> | e
-<termopr> ::= '+' | '-'
-
-<factor> ::= '(' <exp> ')' | <ident>
-<factoropr> ::= '*' | '/'
-```
-
-# Opgave 2
-
-Denne laver jeg måske senere.
-
-# Opgave 3
-
-Denne er løst i regn mappen. 
-Kør `make run` deri for at køre.
-
-# Opgave 4
-
-I regn2 mappen
diff --git a/sem1/osc/mm11/regn/Makefile b/sem1/osc/mm11/regn/Makefile
deleted file mode 100644
index 442feba..0000000
--- a/sem1/osc/mm11/regn/Makefile
+++ /dev/null
@@ -1,30 +0,0 @@
-
-LEX=flex
-YACC=bison
-LIBS=-ly -lfl -lm
-CC=gcc
-
-PROG=regn
-TRASH=lex.yy.c $(PROG).tab.c $(PROG) $(PROG).tab.h $(PROG).output
-
-$(PROG): $(PROG).tab.o lex.yy.o symtab.o
-		$(CC) -o $@ $^ $(LIBS) 
-
-$(PROG).tab.c $(PROG).tab.h: $(PROG).y
-		$(YACC) -d -v $(PROG).y
-
-lex.yy.c: $(PROG).l
-		$(LEX) $(PROG).l
-
-%.o: %.c
-	$(CC) -c -o $@ $^
-
-PHONY: clean run
-
-run: $(PROG)
-	./$(PROG)
-
-clean:
-	rm -f *.o
-	rm -f $(TRASH)
-
diff --git a/sem1/osc/mm11/regn/regn.l b/sem1/osc/mm11/regn/regn.l
deleted file mode 100644
index bbaadb8..0000000
--- a/sem1/osc/mm11/regn/regn.l
+++ /dev/null
@@ -1,40 +0,0 @@
-%{
-#include <math.h>
-#include <string.h>
-#include "symtab.h"
-#include "regn.tab.h"
-%}
-
-realtal      ([0-9]+|([0-9]*\.[0-9]+))([eE][-+]?[0-9]+)?
-var_begin	 let
-op_log		 log
-op_exp		 exp
-op_sqrt		 sqrt
-var			 [A-Za-z][A-Za-z0-9]*
-
-%%
-{realtal}      {yylval.dval = atof(yytext); 
-                return TAL;}
-{var_begin}	   {return VAR_BEGIN;}
-{op_log}	   {return LOG;}
-{op_exp}	   {return EXP;}
-{op_sqrt}	   {return SQRT;}
-
-{var}		   {yylval.string = strdup(yytext); return VAR;}
-
-[ \t] ;
-
-
-'$'            {return 0;} 
-
-\n|.           {return yytext[0];} 
-
-%%
-
-void init_sym()
-{
-	int  i;
-	for (i = 0; i < HASHSIZE; i++)
-		symbolarray[i] = NULL;
-}
-
diff --git a/sem1/osc/mm11/regn/regn.y b/sem1/osc/mm11/regn/regn.y
deleted file mode 100644
index d0f67eb..0000000
--- a/sem1/osc/mm11/regn/regn.y
+++ /dev/null
@@ -1,54 +0,0 @@
-%{
-#include <stdio.h>
-#include <math.h>
-#include "symtab.h"
-#include <string.h>
-%}
-
-%union {
-	char           *string;
-	double          dval;
-}
-
-%token <string> VAR
-%token <dval> TAL
-%token LOG EXP SQRT VAR_BEGIN
-
-%left '-' '+'
-%right LOG EXP SQRT
-%left '*' '/'
-%right UMINUS
-
-%type <dval> expression
-
-%%
-
-statement_list: statement '\n'
-	  | statement_list statement '\n' ;
-
-statement:  expression					{printf("= %f\n",$1);}
-	  | VAR_BEGIN VAR '=' expression	{symnode_t *n = sym_lookup($2);
-										 if( !n ) {n = sym_insert($2); }
-										 n->value = $4;};
-
-expression: expression '+' expression   {$$ = $1 + $3;}
-	  | expression '-' expression   {$$ = $1 - $3;}
-	  | expression '*' expression   {$$ = $1 * $3;}
-	  | expression '/' expression   {if ($3 == 0.0) 
-                                           yyerror("divide dy zero");
-                                         else $$ = $1 / $3;}
-	  | '-' expression %prec UMINUS {$$ =  - $2;}
-	  | '(' expression ')'          {$$= $2;}
-	  | LOG expression				{$$ = log($2);}
-	  | EXP expression				{$$ = exp($2);}
-	  | SQRT expression				{$$ = sqrt($2);}
-          | TAL                         {$$ = $1;}
-	  | VAR							{symnode_t *n = sym_lookup($1);
-									 if( !n ) { yyerror("Var not found"); } else { $$ = n->value;} };
-%%
-
-int main()
-{ 
-  yyparse(); 
-}
-
diff --git a/sem1/osc/mm11/regn/symtab.c b/sem1/osc/mm11/regn/symtab.c
deleted file mode 100644
index 8103203..0000000
--- a/sem1/osc/mm11/regn/symtab.c
+++ /dev/null
@@ -1,50 +0,0 @@
-#include "symtab.h"
-#include <stdlib.h>
-#include <string.h>
-
-unsigned int hash(char *s) {
-	uint32_t hv = 0;
-	for( int i = 0; s[i] != '\0'; i++ ) {
-		// take MSB 6 bits of hv and xors with LSB of s[i]
-		uint32_t v = ( hv >> 26 ) ^ (s[i] & 0x3f);
-
-		// Push those back on hv
-		hv = (hv << 4) | v;
-	}
-	// Return appropriate size
-	return hv % HASHSIZE;
-}
-
-
-symnode_t *sym_insert(char *var) {
-	unsigned int index = hash(var);
-
-	// Save old value
-	symnode_t *oldSym = symbolarray[index];
-
-	// Make new
-	symbolarray[index] = malloc(sizeof(symnode_t));
-	if( symbolarray[index] == NULL ) {
-		// If malloc failed
-		symbolarray[index] = oldSym;
-		return NULL;
-	}
-
-	// Link old one
-	symbolarray[index]->next = oldSym;
-	symbolarray[index]->name = var;
-
-	return symbolarray[index];
-}
-
-symnode_t *sym_lookup(char *var) {
-	unsigned int index = hash(var);
-	symnode_t *n = symbolarray[index];
-
-	// Look trough list
-	while(n != NULL && strcmp(n->name, var) != 0) {
-		n = n->next;
-	}
-
-	return n;
-}
diff --git a/sem1/osc/mm11/regn/symtab.h b/sem1/osc/mm11/regn/symtab.h
deleted file mode 100644
index c61f3a8..0000000
--- a/sem1/osc/mm11/regn/symtab.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#include <stdint.h>
-#define HASHSIZE 100
-
-typedef struct symnode_struct {
-	char *name;
-	struct symnode_struct *next;
-	double value;
-} symnode_t;
-
-symnode_t *sym_insert(char *var);
-symnode_t *sym_lookup(char *var);
-
-struct symnode {
-	struct symnode *next;
-	char *name;
-	int type;
-	double value;
-};
-
-symnode_t *symbolarray[HASHSIZE];
diff --git a/sem1/osc/mm11/regn2/Makefile b/sem1/osc/mm11/regn2/Makefile
deleted file mode 100644
index 9640aaa..0000000
--- a/sem1/osc/mm11/regn2/Makefile
+++ /dev/null
@@ -1,30 +0,0 @@
-
-LEX=flex
-YACC=bison
-LIBS=-ly -lfl -lm
-CC=gcc
-
-PROG=regn
-TRASH=lex.yy.c $(PROG).tab.c $(PROG) $(PROG).tab.h $(PROG).output
-
-$(PROG): $(PROG).tab.o lex.yy.o
-		$(CC) -o $@ $^ $(LIBS) 
-
-$(PROG).tab.c $(PROG).tab.h: $(PROG).y
-		$(YACC) -d -v $(PROG).y
-
-lex.yy.c: $(PROG).l
-		$(LEX) $(PROG).l
-
-%.o: %.c
-	$(CC) -c -o $@ $^
-
-PHONY: clean run
-
-run: $(PROG)
-	./$(PROG)
-
-clean:
-	rm -f *.o
-	rm -f $(TRASH)
-
diff --git a/sem1/osc/mm11/regn2/regn.l b/sem1/osc/mm11/regn2/regn.l
deleted file mode 100644
index 9988ddd..0000000
--- a/sem1/osc/mm11/regn2/regn.l
+++ /dev/null
@@ -1,27 +0,0 @@
-%{
-#include <math.h>
-#include <string.h>
-#include "regn.tab.h"
-%}
-
-realtal      ([0-9]+|([0-9]*\.[0-9]+))([eE][-+]?[0-9]+)?
-op_log		 log
-op_exp		 exp
-op_sqrt		 sqrt
-
-%%
-{realtal}      {yylval.dval = atof(yytext); 
-                return TAL;}
-{op_log}	   {return LOG;}
-{op_exp}	   {return EXP;}
-{op_sqrt}	   {return SQRT;}
-
-[ \t] ;
-
-
-'$'            {return 0;} 
-
-\n|.           {return yytext[0];} 
-
-%%
-
diff --git a/sem1/osc/mm11/regn2/regn.y b/sem1/osc/mm11/regn2/regn.y
deleted file mode 100644
index eac24c8..0000000
--- a/sem1/osc/mm11/regn2/regn.y
+++ /dev/null
@@ -1,46 +0,0 @@
-%{
-#include <stdio.h>
-#include <math.h>
-#include <string.h>
-%}
-
-%union {
-	double          dval;
-}
-
-%token <dval> TAL
-%token LOG EXP SQRT
-
-%left '-' '+'
-%left LOG EXP SQRT
-%left '*' '/'
-%right UMINUS
-
-%type <dval> expression
-
-%%
-
-statement_list: statement '\n'
-	  | statement_list statement '\n' ;
-
-statement:  expression					{printf("out \n");};
-
-expression: expression '+' expression   {printf("sum \n");}
-	  | expression '-' expression		{printf("sub \n");}
-	  | expression '*' expression		{printf("mul \n");}
-	  | expression '/' expression		{if ($3 == 0.0) 
-                                           yyerror("divide dy zero");
-                                         else printf("div \n");}
-	  | '-' expression %prec UMINUS		{printf("neg \n");}
-	  | '(' expression ')'				{;}
-	  | LOG expression					{printf("log \n");}
-	  | EXP expression					{printf("exp \n");}
-	  | SQRT expression					{printf("sqrt \n");}
-          | TAL                         {printf("load %f \n", $$);};
-%%
-
-int main()
-{ 
-  yyparse(); 
-}
-
diff --git a/sem1/osc/mm3/opgaver.md b/sem1/osc/mm3/opgaver.md
deleted file mode 100644
index d9440f8..0000000
--- a/sem1/osc/mm3/opgaver.md
+++ /dev/null
@@ -1,47 +0,0 @@
-# Opgave 1
-
-> Et operativsystem anvenderen 2-level page tabel og 4Kbyte pagesize. Det
-virtuelle adresseområde er på 4GByte. De programmer der afvikles på
-computeren er på mellem 64 KByte og 16MByte. Hvor mange bit vil I anvende til
-index ind i hhv. page tabel 1 og pagetabel 2.
-
-Her betyder det at man har en tabel der referere til level 2 tabeller.
-
-Så i level to tabellen ville jeg nok have 4M da det er 1023 pages. 
-Dette betyder at der vil lidt spild med det lille program på 64kb men det større program på 16Mb betøver ikke få så mange pages.
-
-1023 pages kræver tilgængeld 10 bits til indexering hvilket er lidt spild.
-
-For at få op til 4GB skal man igen have 1023 reference i level 1 tabel.
-
-En anden mulighed ville være at have 8 bits til level 2 index, og derfor have 255 pages i level to tabel.
-Dette vil betyde at level to indexen ikke spilder plads from med 10 bit.
-
-En level 1 tabel indexer derfor 4Kb * 255 = 4096 * 255 = 104 4480 = 104Kb
-
-Her vil level 1 tabellen få 4Gb / 104.4480Kb = 4 000 000 000 / 104 4480 =~= 4112
-
-Her skal man bruge 13 bits, hvilket betyder at man spilder 3 bits hvis man bruger 16 bit system.
-
-# Opgave 2
-
-> Diskuter måder at håndtere virtuelle pages på. Kan man optimere software i
-forhold til hvordan et OS håndterer pages? Er der noget i en eller flere
-koncepter I måske kan anvende i jeres projekt?
-
-Læser på wikipedia at dette er en teknik hvor man gemmer under pagene i virtuel memory i stedet for physical.
-Dette vil betyder at den også kan blive swappet til disk osv.
-
-Dette vil tilgengeld kræve at man har nogle pages i physical som skal holder styr på de virtuelle som indeholder andre pages.
-Det vil nok egentlig være lidt bøvlet. 
-
-Man kunne måske have at level 1 tabellen signalere om pagen er i physical eller virtuel.
-
-# Opgave 3
-
-> Skriv et lille program, der allokerer en stadig voksende mængde hukommelse,
-f.eks. start med 8kB, 8MB, 8GB og mere... hvornår løber I ind i problemer?
-Observer evt. med værktøjet ovenstående eller andet der passer til jeres
-platform.
-
-
diff --git a/sem1/osc/mm8/mm8.ino b/sem1/osc/mm8/mm8.ino
deleted file mode 100644
index f47306d..0000000
--- a/sem1/osc/mm8/mm8.ino
+++ /dev/null
@@ -1,47 +0,0 @@
-// Spg kernel
-#include <krnl.h>
-
-#define PRIO 10
-#define STACK 100
-
-char stackFast[STACK];
-struct k_t *semFast, *fastTask;
-
-void fast() {
-	/* Gotta go fast(10 Hz) */
-	k_set_sem_timer(semFast, 1000);
-	for(;;) {
-		k_wait(semFast, 0);
-		k_eat_ticks(90);
-	}
-}
-
-void setup() {
-	pinMode(13, OUTPUT);
-
-	PORTB |= 0x20;
-	delay(1000);
-	PORTB &= 0xDF;
-	delay(200);
-
-	k_init(1, 1, 0);
-	
-	fastTask = k_crt_task(fast, PRIO, stackFast, STACK);
-	semFast = k_crt_sem(0, 2);
-
-	k_start(1);
-	PORTB |= 0x20;
-}
-
-void loop() {}
-
-extern "C" {
-
-	void k_breakout() {
-		if( pRun->nr == 0 ) {
-			PORTB |= 0x20;
-		} else {
-			PORTB &= 0xDF;
-		}
-	}
-}
diff --git a/sem1/osc/mm9/opgaver.md b/sem1/osc/mm9/opgaver.md
deleted file mode 100644
index fe2ec99..0000000
--- a/sem1/osc/mm9/opgaver.md
+++ /dev/null
@@ -1,129 +0,0 @@
-# Opgave A
-
-Hmm ved ikke lige med projekt men har en fed ide.
-
-Openscad men til 2d graffik som **kompilere** til svg.
-
-Tænker at man vil lave det i et sprog som c, go eller rust. 
-Rust ville være optimalt men det er også lidt svært.
-
-Det skulle være et emperisk sprog med variabler og functioner.
-Funktioner returnere ikke noget, men mere en bestemt figur.
-
-Variables can be strings, floating point numbers.
-
-Lists are defined as list.
-
-Strings begin with big letters. 
-
-Bools are defined as numbers 0 and 1.
-
-Lists are defined as [] and contain all numbers or all strings.
-
-C style comments.
-
-```
-var Black = "#FFFFFF";
-var White = "#000000";
-list Names = [ "nice", "nice2" ];
-
-var radius = 10.2;
-
-func coolCircle(r, Name) {
-	// Defined as circle(radius, fgCol, bgCol)
-	circle(r, Black, White);
-
-	// Defined as insertText(Text, allign, fgCol)
-	insertText(Name, ALIGN_CENTER, Black);
-}
-
-translate(1, 2) {
-	coolCircle(radius / 2, Names[0]);
-}
-
-coolCircle(radius, Names[1]);
-```
-
-The code will generate two circles, one in the center and one on the coordinates 1, 2.
-
-# Opgave B
-
-Der er defineret to globale variabler, men de er ikke på stacken.
-
-Inde i main laver man en pointer til a og sender ind i funktionen.
-Dette betyder at denne pointer enten ligger på stacken eller i et register når funktionen ainc kører.
-
-Men der kan siges sikkert at stacken indeholder en return pointer til main og en reference til den tidelige stack(tror jeg).
-
-
-## Kode i assembly
-
-Jeg har ikke taget højde for integer operationer.
-
-```
-JMP main
-var_a: DB 4
-
-ainc:
-	MOV B, [A]
-	ADD B, 1
-	MOV [A], B
-	RET
-
-main:
-	MOV A, var_a
-	CALL ainc
-
-	HLT
-```
-
-## Forskellige compile trin
-
-Proprocessor har ikke noget at lave.
-
-Start med at compile til assembly:
-
-Læg a og b i starten af programmet.
-
-Compiler funktionen ainc og adec og sæt en label ved dem.
-Dette gøres ved først at lave koden der henter argument ud og gemmer tidligere stack pointer.
-Derefter compiles indholdet i funktionen.
-Slut af med at returner til caller.
-
-Derefter bliver assembly'en assemblet:
-
-De forskellige mnenorics(eller hvad det nu hed) bliver lavet om til opcodes og lags sammen med deres argumenter.
-Dette gøres for alle funktionerne.
-
-a og b bliver placeret i filen.
-
-Derefter placeres main ved entrypoint og de to funktioner bliver lagt ved siden af.
-De forskellige referencer til funktioner og globale variabler bliver byttet ud med deres virkelige værdier i binary.
-
-# Opgave C
-
-Grammastart -> *Viggo* stmList *End*
-stmList -> stm stmList | e
-stm -> ident *=* exp *;*
-ident -> letter symList
-letter -> *a* | ... | *å* | *A* | ... | *Å*
-digit -> *0* | ... | *9*
-symbol -> letter | digit
-symList -> symbol symList | e
-exp -> term expB
-expB -> termopr term expB | e
-termOpr -> *+* | *-*
-term -> factor termB
-termB -> factorOpr factor termB | e
-factorOpr -> _*_ | _/_
-factor -> *(* exp *)* | ident
-
-## C.2
-
-See tree.png
-
-## C.3
-
-
-
-
diff --git a/sem1/osc/noter.md b/sem1/osc/noter.md
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@@ -1,17 +0,0 @@
-# HUsk
-
-Ikke Deterministisk: Et stadie i kan føre til flere andre states.
-
-Undersøg **kontekst fri**
-
-Leksikal analysen: bruger regulær
-
-Parsing: ikke regulær.
-
-Shift-reduce parser.
-
-3 adress code bruges til mellem kode.
-
-In order: tree (venstre, top, højre)
-preorder: tree (top, venstre, højre)
-postorder: tree (venstre, højre, top)