pushed broken sort
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7cd5414a22
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45
rank.c
45
rank.c
@ -9,22 +9,24 @@
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#include "color.h"
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#include "color.h"
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#define M_STR 255
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#define M_STR 255
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#define M_STR_LEN 255
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void isort(char *, int *, int);
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void isort(char [][M_STR_LEN], int *, int);
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int
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int
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main(void)
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main(void)
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{
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{
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// maximum M_STR strings, 255 bytes each
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// maximum M_STR strings, 255 bytes each
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char strings[M_STR][255] = { 0 };
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char strings[M_STR][M_STR_LEN] = { 0 };
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// read strings
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// read strings
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printf(BOLDWHITE "Enter a ranking (empty line when done) \n" RESET);
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printf(BOLDWHITE "Enter a ranking (empty line when done) \n" RESET);
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int i;
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int i;
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for (i = 0; i < M_STR; i++) {
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for (i = 0; i < M_STR; i++) {
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fgets(strings[i], 255, stdin);
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fgets(strings[i], M_STR_LEN, stdin);
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// if its an empty string, stop reading
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// if its an empty string, stop reading
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if (strings[i][0] == '\n') {
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if (strings[i][0] == '\n') {
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strings[i][0] = '\0';
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strings[i][0] = '\0';
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@ -35,6 +37,10 @@ main(void)
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strings[i][strcspn(strings[i], "\n")] = '\0';
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strings[i][strcspn(strings[i], "\n")] = '\0';
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}
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}
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// init sorted strings
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char sorted_strings[M_STR][i];
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memcpy(sorted_strings, strings, sizeof(sorted_strings));
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// construct matrix of comparisons
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// construct matrix of comparisons
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// NOTE: it doesn't actually store the "reason",
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// NOTE: it doesn't actually store the "reason",
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// it just forces the user to type something out lol
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// it just forces the user to type something out lol
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@ -47,7 +53,6 @@ main(void)
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int winners[i];
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int winners[i];
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int sorted_winners[i];
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int sorted_winners[i];
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// memcpy(3) with null bytes
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// memcpy(3) with null bytes
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memset(winners, 0, sizeof(winners));
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memset(winners, 0, sizeof(winners));
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memset(sorted_winners, 0, sizeof(sorted_winners));
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memset(sorted_winners, 0, sizeof(sorted_winners));
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@ -84,20 +89,42 @@ main(void)
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}
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}
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}
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}
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// print out the results
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for (int j = 0; j < i; j++) {
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printf("%s: %d\n", sorted_strings[j], sorted_winners[j]);
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}
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// insertion sort: the array **should be** nearly sorted
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// insertion sort: the array **should be** nearly sorted
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isort(strings, sorted_winners, i);
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isort(sorted_strings, sorted_winners, i);
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// print out the results
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// print out the results
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for (int j = 0; j < i; j++) {
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for (int j = 0; j < i; j++) {
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printf("%s: %d\n", strings[j], winners[j]);
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printf("%s: %d\n", sorted_strings[j], sorted_winners[j]);
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}
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}
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return 0;
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return 0;
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}
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}
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void
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void
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isort(char *key, int *value, int i) {
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isort(char name[][M_STR_LEN], int *value, int len) {
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// sort by value, modify key accordingly
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// sort by value, modify key accordingly
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for (int i = 1; i < len; i++) {
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int key = value[i];
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char *str_key = name[i];
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int j = i - 1;
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while (j >= 0 && value[j] > key) {
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value[j + 1] = value[j];
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strncpy(name[j + 1], name[j], M_STR_LEN);
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key = value[j];
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str_key = name[j];
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j--;
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}
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value[++j] = key;
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strncpy(name[j + 1], str_key, M_STR_LEN);
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}
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return;
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return;
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}
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}
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