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pushed broken sort

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Om Raheja 2024-08-26 15:17:01 -04:00
parent 7cd5414a22
commit 33dc0628de
1 changed files with 36 additions and 9 deletions
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41
rank.c
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@ -10,21 +10,23 @@
#include "color.h" #include "color.h"
#define M_STR 255 #define M_STR 255
#define M_STR_LEN 255
void isort(char *, int *, int); void isort(char [][M_STR_LEN], int *, int);
int int
main(void) main(void)
{ {
// maximum M_STR strings, 255 bytes each // maximum M_STR strings, 255 bytes each
char strings[M_STR][255] = { 0 }; char strings[M_STR][M_STR_LEN] = { 0 };
// read strings // read strings
printf(BOLDWHITE "Enter a ranking (empty line when done) \n" RESET); printf(BOLDWHITE "Enter a ranking (empty line when done) \n" RESET);
int i; int i;
for (i = 0; i < M_STR; i++) { for (i = 0; i < M_STR; i++) {
fgets(strings[i], 255, stdin); fgets(strings[i], M_STR_LEN, stdin);
// if its an empty string, stop reading // if its an empty string, stop reading
if (strings[i][0] == '\n') { if (strings[i][0] == '\n') {
strings[i][0] = '\0'; strings[i][0] = '\0';
@ -35,6 +37,10 @@ main(void)
strings[i][strcspn(strings[i], "\n")] = '\0'; strings[i][strcspn(strings[i], "\n")] = '\0';
} }
// init sorted strings
char sorted_strings[M_STR][i];
memcpy(sorted_strings, strings, sizeof(sorted_strings));
// construct matrix of comparisons // construct matrix of comparisons
// NOTE: it doesn't actually store the "reason", // NOTE: it doesn't actually store the "reason",
// it just forces the user to type something out lol // it just forces the user to type something out lol
@ -47,7 +53,6 @@ main(void)
int winners[i]; int winners[i];
int sorted_winners[i]; int sorted_winners[i];
// memcpy(3) with null bytes // memcpy(3) with null bytes
memset(winners, 0, sizeof(winners)); memset(winners, 0, sizeof(winners));
memset(sorted_winners, 0, sizeof(sorted_winners)); memset(sorted_winners, 0, sizeof(sorted_winners));
@ -84,20 +89,42 @@ main(void)
} }
} }
// print out the results
for (int j = 0; j < i; j++) {
printf("%s: %d\n", sorted_strings[j], sorted_winners[j]);
}
// insertion sort: the array **should be** nearly sorted // insertion sort: the array **should be** nearly sorted
isort(strings, sorted_winners, i); isort(sorted_strings, sorted_winners, i);
// print out the results // print out the results
for (int j = 0; j < i; j++) { for (int j = 0; j < i; j++) {
printf("%s: %d\n", strings[j], winners[j]); printf("%s: %d\n", sorted_strings[j], sorted_winners[j]);
} }
return 0; return 0;
} }
void void
isort(char *key, int *value, int i) { isort(char name[][M_STR_LEN], int *value, int len) {
// sort by value, modify key accordingly // sort by value, modify key accordingly
for (int i = 1; i < len; i++) {
int key = value[i];
char *str_key = name[i];
int j = i - 1;
while (j >= 0 && value[j] > key) {
value[j + 1] = value[j];
strncpy(name[j + 1], name[j], M_STR_LEN);
key = value[j];
str_key = name[j];
j--;
}
value[++j] = key;
strncpy(name[j + 1], str_key, M_STR_LEN);
}
return; return;
} }