day_2/1.c

@@ -1,72 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdbool.h>
-
-typedef struct levels {
-  size_t mem_size;
-  size_t size;
-  unsigned int *data;
-} levels_t;
-
-int main(void) {
-  FILE *fp = fopen("input", "r");
-
-  if (fp == NULL) {
-    perror("input");
-    return 1;
-  }
-
-  char *line = NULL;
-  size_t size;
-
-  levels_t levels;
-  levels.mem_size = 10;
-  levels.size = 0;
-  levels.data = malloc(sizeof(unsigned int) * levels.mem_size);
-
-  unsigned int sum = 0;
-  while (getline(&line, &size, fp) > 0) {
-    char *next = strtok(line, " ");
-
-    while (next != NULL) {
-      if (levels.size >= levels.mem_size) {
-        levels.mem_size *= 2;
-        levels.data =
-            realloc(levels.data, levels.mem_size * sizeof(unsigned int));
-      }
-
-      sscanf(next, "%u", &levels.data[levels.size]);
-      levels.size++;
-
-      next = strtok(NULL, " ");
-    }
-
-    bool safe = true;
-    int diff = levels.data[1] - levels.data[0];
-    int increasing = diff > 0 ? 1 : -1;
-    for (int i = 1; i < levels.size; i++) {
-      diff = increasing * (levels.data[i] - levels.data[i - 1]);
-
-      if (diff < 1 || diff > 3) {
-        safe = false;
-        break;
-      }
-    }
-
-    if (safe) {
-      sum++;
-    }
-
-    levels.size = 0;
-  }
-
-  free(line);
-  free(levels.data);
-
-  printf("%u\n", sum);
-
-  fclose(fp);
-
-  return 0;
-}

day_2/2.c

@@ -1,81 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdbool.h>
-
-typedef struct levels {
-  size_t mem_size;
-  size_t size;
-  unsigned int *data;
-} levels_t;
-
-int main(void) {
-  FILE *fp = fopen("example", "r");
-
-  if (fp == NULL) {
-    perror("input");
-    return 1;
-  }
-
-  char *line = NULL;
-  size_t size;
-
-  levels_t levels;
-  levels.mem_size = 10;
-  levels.size = 0;
-  levels.data = malloc(sizeof(unsigned int) * levels.mem_size);
-
-  unsigned int sum = 0;
-  while (getline(&line, &size, fp) > 0) {
-    char *next = strtok(line, " ");
-
-    while (next != NULL) {
-      if (levels.size >= levels.mem_size) {
-        levels.mem_size *= 2;
-        levels.data =
-            realloc(levels.data, levels.mem_size * sizeof(unsigned int));
-      }
-
-      sscanf(next, "%u", &levels.data[levels.size]);
-      levels.size++;
-
-      next = strtok(NULL, " ");
-    }
-
-    bool removed_node = false;
-    bool safe = true;
-    int diff = levels.data[1] - levels.data[0];
-    int increasing = diff > 0 ? 1 : -1;
-    for (int i = 1; i < levels.size; i++) {
-      diff = increasing * (levels.data[i] - levels.data[i - 1]);
-
-      if (diff < 1 || diff > 3) {
-        if (removed_node) {
-          safe = false;
-          break;
-        }
-        for (int j = i; j < levels.size; j++) {
-          levels.data[j - 1] = levels.data[j];
-        }
-        levels.size--;
-        i = 0;
-        removed_node = true;
-      }
-    }
-
-    if (safe) {
-      sum++;
-    }
-
-    levels.size = 0;
-  }
-
-  free(line);
-  free(levels.data);
-
-  printf("%u\n", sum);
-
-  fclose(fp);
-
-  return 0;
-}