4 files changed, 673 insertions, 0 deletions
diff --git a/Advent-of-Code-2022/aoc-5/build.sh b/Advent-of-Code-2022/aoc-5/build.sh
new file mode 100755
index 0000000..30f495e
--- /dev/null
+++ b/Advent-of-Code-2022/aoc-5/build.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+set -xe
+
+gcc -o main main.c -Wall -Wextra -pedantic
diff --git a/Advent-of-Code-2022/aoc-5/input.txt b/Advent-of-Code-2022/aoc-5/input.txt
new file mode 100644
index 0000000..968606f
--- /dev/null
+++ b/Advent-of-Code-2022/aoc-5/input.txt
@@ -0,0 +1,512 @@
+                [M]     [W] [M]
+            [L] [Q] [S] [C] [R]
+            [Q] [F] [F] [T] [N] [S]
+    [N]     [V] [V] [H] [L] [J] [D]
+    [D] [D] [W] [P] [G] [R] [D] [F]
+[T] [T] [M] [G] [G] [Q] [N] [W] [L]
+[Z] [H] [F] [J] [D] [Z] [S] [H] [Q]
+[B] [V] [B] [T] [W] [V] [Z] [Z] [M]
+ 1   2   3   4   5   6   7   8   9
+
+move 1 from 7 to 4
+move 1 from 6 to 2
+move 5 from 9 to 4
+move 2 from 2 to 8
+move 2 from 2 to 6
+move 3 from 3 to 7
+move 3 from 7 to 1
+move 1 from 9 to 4
+move 4 from 7 to 3
+move 5 from 1 to 8
+move 1 from 1 to 2
+move 1 from 4 to 9
+move 4 from 5 to 6
+move 1 from 5 to 8
+move 3 from 2 to 4
+move 3 from 6 to 4
+move 3 from 5 to 9
+move 1 from 9 to 7
+move 1 from 9 to 8
+move 2 from 7 to 9
+move 1 from 7 to 9
+move 1 from 7 to 8
+move 2 from 9 to 8
+move 13 from 4 to 2
+move 2 from 6 to 1
+move 3 from 3 to 2
+move 9 from 2 to 7
+move 1 from 9 to 7
+move 5 from 7 to 8
+move 9 from 8 to 4
+move 2 from 7 to 1
+move 1 from 1 to 7
+move 2 from 3 to 2
+move 14 from 4 to 5
+move 3 from 8 to 4
+move 13 from 8 to 3
+move 2 from 7 to 1
+move 6 from 6 to 5
+move 1 from 6 to 9
+move 3 from 2 to 8
+move 1 from 7 to 8
+move 5 from 2 to 8
+move 4 from 4 to 8
+move 1 from 9 to 8
+move 1 from 7 to 1
+move 1 from 1 to 2
+move 7 from 3 to 2
+move 4 from 3 to 2
+move 2 from 5 to 3
+move 2 from 1 to 5
+move 5 from 8 to 7
+move 6 from 8 to 3
+move 11 from 5 to 8
+move 8 from 8 to 9
+move 5 from 7 to 8
+move 3 from 1 to 8
+move 5 from 3 to 8
+move 11 from 2 to 9
+move 1 from 3 to 5
+move 1 from 2 to 1
+move 1 from 2 to 7
+move 6 from 5 to 7
+move 19 from 9 to 7
+move 3 from 5 to 3
+move 1 from 5 to 4
+move 1 from 1 to 4
+move 1 from 9 to 8
+move 25 from 7 to 9
+move 2 from 4 to 1
+move 2 from 1 to 4
+move 2 from 4 to 7
+move 2 from 7 to 9
+move 5 from 3 to 1
+move 1 from 7 to 1
+move 9 from 9 to 5
+move 3 from 5 to 6
+move 9 from 9 to 1
+move 7 from 1 to 3
+move 6 from 8 to 9
+move 1 from 5 to 2
+move 10 from 9 to 2
+move 1 from 2 to 7
+move 5 from 9 to 8
+move 1 from 5 to 8
+move 5 from 3 to 8
+move 1 from 9 to 4
+move 4 from 3 to 6
+move 4 from 6 to 3
+move 3 from 1 to 4
+move 3 from 2 to 4
+move 3 from 5 to 8
+move 3 from 4 to 9
+move 1 from 7 to 3
+move 2 from 9 to 8
+move 4 from 2 to 5
+move 1 from 3 to 4
+move 1 from 9 to 3
+move 5 from 5 to 6
+move 7 from 8 to 5
+move 3 from 1 to 7
+move 6 from 5 to 8
+move 5 from 4 to 5
+move 3 from 3 to 2
+move 1 from 1 to 4
+move 19 from 8 to 1
+move 3 from 7 to 3
+move 4 from 2 to 9
+move 1 from 2 to 6
+move 7 from 6 to 4
+move 1 from 6 to 2
+move 2 from 1 to 3
+move 5 from 4 to 1
+move 1 from 6 to 2
+move 3 from 3 to 6
+move 12 from 1 to 2
+move 2 from 8 to 1
+move 14 from 2 to 4
+move 7 from 1 to 5
+move 10 from 4 to 6
+move 3 from 6 to 4
+move 1 from 8 to 4
+move 4 from 3 to 5
+move 1 from 2 to 3
+move 2 from 1 to 4
+move 17 from 5 to 3
+move 7 from 4 to 1
+move 1 from 9 to 4
+move 4 from 6 to 3
+move 5 from 4 to 8
+move 12 from 3 to 1
+move 6 from 3 to 5
+move 17 from 1 to 5
+move 2 from 1 to 9
+move 3 from 1 to 4
+move 7 from 8 to 2
+move 4 from 3 to 7
+move 1 from 1 to 8
+move 17 from 5 to 2
+move 11 from 2 to 8
+move 11 from 8 to 4
+move 11 from 2 to 4
+move 4 from 6 to 1
+move 4 from 1 to 3
+move 2 from 6 to 9
+move 3 from 7 to 8
+move 3 from 5 to 3
+move 23 from 4 to 3
+move 4 from 4 to 8
+move 1 from 7 to 4
+move 2 from 2 to 3
+move 6 from 3 to 2
+move 16 from 3 to 9
+move 2 from 5 to 8
+move 1 from 4 to 5
+move 2 from 5 to 9
+move 1 from 2 to 3
+move 1 from 3 to 8
+move 9 from 9 to 1
+move 6 from 3 to 8
+move 3 from 3 to 1
+move 18 from 8 to 9
+move 1 from 3 to 5
+move 5 from 1 to 4
+move 5 from 1 to 8
+move 3 from 4 to 1
+move 1 from 5 to 2
+move 2 from 4 to 8
+move 1 from 1 to 2
+move 5 from 2 to 7
+move 2 from 8 to 1
+move 2 from 2 to 6
+move 3 from 1 to 6
+move 3 from 9 to 6
+move 31 from 9 to 7
+move 26 from 7 to 8
+move 3 from 1 to 6
+move 22 from 8 to 4
+move 2 from 4 to 5
+move 4 from 6 to 5
+move 11 from 4 to 3
+move 9 from 4 to 6
+move 2 from 5 to 9
+move 4 from 7 to 1
+move 2 from 6 to 1
+move 1 from 5 to 3
+move 6 from 8 to 6
+move 8 from 6 to 2
+move 1 from 1 to 6
+move 3 from 1 to 3
+move 1 from 5 to 3
+move 1 from 5 to 9
+move 5 from 7 to 2
+move 2 from 9 to 6
+move 4 from 8 to 6
+move 1 from 7 to 2
+move 1 from 5 to 4
+move 12 from 3 to 4
+move 3 from 3 to 1
+move 3 from 6 to 8
+move 1 from 9 to 3
+move 6 from 2 to 6
+move 2 from 3 to 2
+move 10 from 2 to 7
+move 2 from 1 to 9
+move 2 from 1 to 6
+move 1 from 1 to 4
+move 9 from 7 to 9
+move 3 from 8 to 7
+move 7 from 4 to 8
+move 2 from 7 to 4
+move 4 from 8 to 1
+move 5 from 8 to 2
+move 3 from 1 to 3
+move 1 from 8 to 7
+move 3 from 3 to 7
+move 4 from 2 to 6
+move 8 from 4 to 2
+move 5 from 2 to 5
+move 11 from 9 to 7
+move 2 from 5 to 7
+move 16 from 7 to 8
+move 5 from 8 to 7
+move 1 from 4 to 3
+move 3 from 5 to 1
+move 11 from 6 to 5
+move 7 from 5 to 4
+move 5 from 7 to 4
+move 1 from 3 to 7
+move 2 from 5 to 4
+move 10 from 4 to 8
+move 14 from 6 to 3
+move 1 from 5 to 9
+move 1 from 6 to 5
+move 2 from 2 to 9
+move 2 from 1 to 3
+move 2 from 5 to 3
+move 2 from 7 to 6
+move 2 from 1 to 4
+move 1 from 2 to 3
+move 19 from 3 to 6
+move 3 from 9 to 2
+move 4 from 2 to 6
+move 6 from 6 to 7
+move 13 from 6 to 2
+move 14 from 8 to 1
+move 6 from 4 to 3
+move 5 from 7 to 8
+move 3 from 6 to 3
+move 2 from 8 to 2
+move 2 from 6 to 8
+move 4 from 1 to 8
+move 13 from 8 to 4
+move 10 from 4 to 7
+move 1 from 4 to 5
+move 1 from 5 to 1
+move 3 from 6 to 5
+move 3 from 8 to 9
+move 9 from 3 to 1
+move 3 from 5 to 8
+move 3 from 9 to 6
+move 3 from 8 to 7
+move 1 from 6 to 9
+move 1 from 9 to 4
+move 9 from 2 to 8
+move 2 from 2 to 6
+move 14 from 7 to 1
+move 31 from 1 to 5
+move 3 from 1 to 7
+move 4 from 6 to 8
+move 24 from 5 to 3
+move 2 from 8 to 1
+move 1 from 8 to 5
+move 2 from 1 to 7
+move 3 from 7 to 6
+move 6 from 8 to 6
+move 2 from 4 to 2
+move 1 from 4 to 3
+move 2 from 2 to 7
+move 6 from 6 to 7
+move 4 from 8 to 6
+move 7 from 6 to 2
+move 12 from 7 to 5
+move 4 from 2 to 8
+move 1 from 2 to 4
+move 1 from 4 to 6
+move 1 from 6 to 7
+move 1 from 7 to 3
+move 3 from 3 to 8
+move 17 from 3 to 5
+move 4 from 3 to 6
+move 35 from 5 to 3
+move 2 from 2 to 6
+move 1 from 5 to 9
+move 9 from 3 to 7
+move 6 from 8 to 1
+move 4 from 2 to 6
+move 4 from 6 to 9
+move 20 from 3 to 9
+move 22 from 9 to 7
+move 1 from 8 to 6
+move 29 from 7 to 5
+move 4 from 6 to 8
+move 6 from 1 to 8
+move 2 from 7 to 3
+move 1 from 6 to 5
+move 2 from 3 to 9
+move 1 from 9 to 3
+move 4 from 5 to 6
+move 18 from 5 to 1
+move 7 from 3 to 1
+move 1 from 3 to 6
+move 3 from 5 to 1
+move 1 from 3 to 9
+move 4 from 5 to 2
+move 10 from 8 to 7
+move 2 from 9 to 3
+move 1 from 3 to 5
+move 21 from 1 to 9
+move 1 from 3 to 2
+move 1 from 2 to 9
+move 15 from 9 to 3
+move 4 from 7 to 1
+move 2 from 6 to 1
+move 7 from 9 to 1
+move 1 from 5 to 4
+move 1 from 4 to 6
+move 6 from 3 to 9
+move 3 from 6 to 5
+move 19 from 1 to 6
+move 8 from 3 to 6
+move 1 from 3 to 7
+move 20 from 6 to 7
+move 1 from 2 to 6
+move 6 from 9 to 8
+move 2 from 9 to 4
+move 1 from 1 to 3
+move 1 from 2 to 9
+move 3 from 5 to 6
+move 2 from 7 to 3
+move 2 from 9 to 7
+move 1 from 4 to 8
+move 4 from 8 to 9
+move 4 from 7 to 1
+move 2 from 1 to 7
+move 1 from 3 to 2
+move 2 from 8 to 9
+move 6 from 6 to 2
+move 1 from 8 to 1
+move 1 from 5 to 7
+move 4 from 2 to 9
+move 1 from 3 to 5
+move 5 from 6 to 1
+move 1 from 4 to 2
+move 1 from 9 to 6
+move 1 from 9 to 6
+move 4 from 6 to 3
+move 7 from 9 to 7
+move 8 from 7 to 2
+move 1 from 5 to 8
+move 5 from 2 to 9
+move 3 from 2 to 5
+move 6 from 1 to 3
+move 17 from 7 to 6
+move 1 from 8 to 2
+move 2 from 1 to 7
+move 5 from 9 to 4
+move 4 from 3 to 8
+move 3 from 4 to 1
+move 1 from 9 to 2
+move 4 from 2 to 1
+move 1 from 8 to 4
+move 1 from 5 to 9
+move 1 from 2 to 3
+move 3 from 3 to 2
+move 10 from 7 to 6
+move 3 from 4 to 1
+move 5 from 3 to 2
+move 4 from 1 to 5
+move 3 from 8 to 6
+move 12 from 6 to 4
+move 1 from 9 to 3
+move 1 from 5 to 2
+move 3 from 1 to 6
+move 12 from 6 to 8
+move 3 from 1 to 5
+move 2 from 4 to 3
+move 5 from 8 to 7
+move 7 from 5 to 3
+move 3 from 7 to 9
+move 1 from 5 to 8
+move 5 from 3 to 7
+move 10 from 6 to 5
+move 2 from 7 to 5
+move 8 from 2 to 9
+move 5 from 3 to 9
+move 9 from 5 to 1
+move 5 from 7 to 4
+move 15 from 9 to 5
+move 1 from 2 to 5
+move 1 from 8 to 5
+move 6 from 4 to 1
+move 2 from 2 to 9
+move 18 from 5 to 8
+move 18 from 8 to 3
+move 16 from 3 to 4
+move 3 from 5 to 8
+move 1 from 9 to 2
+move 3 from 1 to 7
+move 3 from 8 to 2
+move 3 from 7 to 9
+move 2 from 3 to 4
+move 3 from 9 to 8
+move 11 from 1 to 6
+move 2 from 9 to 4
+move 3 from 6 to 9
+move 8 from 6 to 4
+move 26 from 4 to 7
+move 1 from 2 to 5
+move 1 from 5 to 2
+move 3 from 9 to 3
+move 21 from 7 to 6
+move 4 from 2 to 4
+move 1 from 2 to 3
+move 5 from 7 to 6
+move 8 from 8 to 1
+move 1 from 3 to 7
+move 9 from 1 to 4
+move 1 from 7 to 4
+move 20 from 4 to 7
+move 1 from 8 to 5
+move 2 from 4 to 8
+move 1 from 4 to 9
+move 3 from 8 to 9
+move 1 from 5 to 8
+move 2 from 3 to 1
+move 4 from 7 to 8
+move 3 from 7 to 5
+move 1 from 1 to 7
+move 4 from 8 to 3
+move 3 from 5 to 6
+move 1 from 8 to 4
+move 1 from 1 to 8
+move 28 from 6 to 4
+move 1 from 6 to 1
+move 2 from 7 to 8
+move 1 from 8 to 7
+move 1 from 8 to 1
+move 2 from 1 to 9
+move 3 from 9 to 3
+move 12 from 7 to 5
+move 7 from 3 to 1
+move 1 from 3 to 6
+move 26 from 4 to 9
+move 1 from 6 to 3
+move 1 from 3 to 6
+move 1 from 8 to 6
+move 1 from 7 to 8
+move 1 from 6 to 3
+move 3 from 1 to 3
+move 5 from 4 to 3
+move 28 from 9 to 4
+move 2 from 1 to 5
+move 22 from 4 to 1
+move 3 from 5 to 3
+move 5 from 5 to 7
+move 10 from 1 to 6
+move 1 from 5 to 2
+move 3 from 5 to 3
+move 2 from 5 to 9
+move 3 from 9 to 7
+move 2 from 4 to 5
+move 1 from 5 to 4
+move 4 from 3 to 8
+move 1 from 5 to 7
+move 9 from 6 to 5
+move 1 from 7 to 6
+move 1 from 6 to 5
+move 2 from 6 to 9
+move 3 from 5 to 1
+move 13 from 1 to 3
+move 7 from 7 to 5
+move 1 from 2 to 9
+move 3 from 8 to 2
+move 1 from 7 to 2
+move 3 from 4 to 3
+move 19 from 3 to 8
+move 5 from 3 to 7
+move 1 from 7 to 1
+move 19 from 8 to 6
+move 5 from 1 to 4
+move 5 from 5 to 2
+move 2 from 2 to 7
+move 3 from 4 to 1
+move 6 from 5 to 7
+move 2 from 8 to 7
+move 2 from 2 to 7
+move 3 from 3 to 5
+move 5 from 7 to 6
+move 6 from 6 to 1
+move 2 from 5 to 1
+move 2 from 4 to 3
+move 1 from 5 to 8
diff --git a/Advent-of-Code-2022/aoc-5/main.c b/Advent-of-Code-2022/aoc-5/main.c
new file mode 100644
index 0000000..409cf6b
--- /dev/null
+++ b/Advent-of-Code-2022/aoc-5/main.c
@@ -0,0 +1,147 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if 0
+  #define transfer transfer_part1
+#else
+  #define transfer transfer_part2
+#endif
+
+#if 0
+  #define FILENAME "sample.txt"
+  #define COLUMNS 3
+#else
+  #define FILENAME "input.txt"
+  #define COLUMNS 9
+#endif
+
+#define STRINT(d) atoi(strtok(NULL, d)); strtok(NULL, d);
+
+typedef struct crate crate;
+crate *create_crate(char data);
+void push(crate *c, int i);
+crate *add(crate *c, crate *last, int i);
+crate *pop(int i);
+void transfer_part1(int from, int to, int n);
+void transfer_part2(int from, int to, int n);
+void free_crates(crate *c);
+void print_crate(char *format, crate *c);
+
+crate *top[COLUMNS+1] = {0};
+
+void parse()
+{
+    FILE *fp = fopen(FILENAME, "r");
+	if(!fp) {
+        fprintf(stderr, "ERROR: Could not open file: %s\n", FILENAME);
+        exit(1);
+    }
+
+    char line[256] = {0};
+    crate *last[COLUMNS] = {0};
+    while(fgets(line, sizeof(line), fp) != NULL && line[0] != '\n')
+    {
+        for(int i = 0; i < COLUMNS; i++) {
+            char ch = line[(i*4)+1];
+            if(ch >= 65 && ch <= 90) {
+                last[i] = add(create_crate(ch), last[i], i);
+            }
+        }
+    }
+
+    while(fgets(line, sizeof(line), fp) != NULL)
+    {
+        strtok(line, " ");
+        int n = STRINT(" ");
+        int from = STRINT(" ");
+        int to   = STRINT(" ");
+
+        transfer(from-1, to-1, n);
+    }
+
+    fclose(fp);
+}
+
+int main(void)
+{
+    parse();
+    for(int i = 0; i < COLUMNS; i++) {
+        print_crate("%c", top[i]);
+        free_crates(top[i]);
+    }
+    puts("");
+    return 0;
+}
+
+
+
+struct crate {
+    char data;
+    struct crate *prev;
+};
+
+crate *create_crate(char data)
+{
+    crate *c = malloc(sizeof(crate));
+    c->data = data;
+    c->prev = NULL;
+    return c;
+}
+
+void push(crate *c, int i)
+{
+    c->prev = top[i];
+    top[i] = c;
+}
+
+crate *add(crate *c, crate *last, int i)
+{
+    if(last == NULL) {
+        push(c, i);
+        return c;
+    }
+
+    last->prev = c;
+    return c;
+}
+
+crate *pop(int i)
+{
+    if(top[i] == NULL) {
+        fprintf(stderr, "ERROR: Column %d is empty, can't pop\n", i);
+        exit(1);
+    }
+
+    crate *c = top[i];
+    top[i] = c->prev;
+    return c;
+}
+
+void transfer_part1(int from, int to, int n)
+{
+    for(int i = 0; i < n; i++)
+        push(pop(from), to);
+}
+
+void transfer_part2(int from, int to, int n)
+{
+    for(int i = 0; i < n; i++)
+        push(pop(from), COLUMNS);
+    for(int i = 0; i < n; i++)
+        push(pop(COLUMNS), to);
+}
+
+void free_crates(crate *c)
+{
+    if(c == NULL) return;
+    crate *prev = c->prev;
+    free(c);
+    free_crates(prev);
+}
+
+void print_crate(char *format, crate *c)
+{
+    if(c == NULL) return;
+    printf(format, c->data);
+}
diff --git a/Advent-of-Code-2022/aoc-5/sample.txt b/Advent-of-Code-2022/aoc-5/sample.txt
new file mode 100644
index 0000000..42ef47f
--- /dev/null
+++ b/Advent-of-Code-2022/aoc-5/sample.txt
@@ -0,0 +1,9 @@
+    [D]
+[N] [C]
+[Z] [M] [P]
+ 1   2   3
+
+move 1 from 2 to 1
+move 3 from 1 to 3
+move 2 from 2 to 1
+move 1 from 1 to 2