72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include "../lib/util.h"
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#define ADAPTER_LENGTH 99
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void int_array_quicksort(int *array, size_t length) {
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// printf("Length: %d\n", length);
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if (length < 2) return;
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int *low = malloc((length - 1) * sizeof(int));
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size_t low_index = 0;
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int *high = malloc((length - 1) * sizeof(int));
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size_t high_index = 0;
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size_t pivot_index = length / 2;
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int pivot = array[pivot_index];
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for (size_t i = 0; i < length; i++) {
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int element = array[i];
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if (element > pivot) {
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low[low_index++] = element;
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} else {
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high[high_index++] = element;
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}
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}
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// printf("low: %d\nhigh: %d\n\n", low_index, high_index);
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if (low_index && high_index) {
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int_array_quicksort(low, low_index);
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int_array_quicksort(high, high_index);
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}
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for (size_t i = 0; i < low_index; i++) {
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array[i] = low[i];
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}
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array[pivot_index] = pivot;
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for (size_t i = 0; i < high_index; i++) {
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array[i + low_index + 1] = high[i];
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}
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free(low);
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free(high);
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}
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int part_1() {
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char *data_buffer = load_input();
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int *adapters = malloc(sizeof(int) * ADAPTER_LENGTH);
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size_t adapter_index = 0;
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char *adapter_text = strtok(data_buffer, "\n");
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do {
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adapters[adapter_index++] = atoi(adapter_text);
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} while (adapter_text = strtok(NULL, "\n"));
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int_array_quicksort(adapters, ADAPTER_LENGTH);
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free(data_buffer);
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free(adapters);
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return 1;
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}
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int part_2() {
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return 0;
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char *data_buffer = load_input();
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}
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int main() {
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printf("Part 1: %d\n", part_1());
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printf("Part 2: %d\n", part_2());
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}
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