51 lines
947 B
C
51 lines
947 B
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#define MAX 1001
|
||
|
|
|
||
|
|
void sort(char **arr, int n);
|
||
|
|
void swap(char **arr1, char **arr2);
|
||
|
|
|
||
|
|
int main(void) {
|
||
|
|
int n;
|
||
|
|
scanf("%d", &n);
|
||
|
|
getchar();
|
||
|
|
// 2d array
|
||
|
|
char **str = malloc(sizeof(char *) * n);
|
||
|
|
// Buffer array
|
||
|
|
char *buffer = malloc(sizeof(char) * MAX);
|
||
|
|
|
||
|
|
for (int i = 0; i < n; i++) {
|
||
|
|
fgets(buffer, MAX, stdin);
|
||
|
|
str[i] = malloc(strlen(buffer) + 1);
|
||
|
|
strcpy(str[i], buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
sort(str, n);
|
||
|
|
|
||
|
|
for (int i = 0; i < n; i++) {
|
||
|
|
printf("%s", str[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Free up memory
|
||
|
|
free(buffer);
|
||
|
|
for (int i = 0; i < n; i++) {
|
||
|
|
free(str[i]);
|
||
|
|
}
|
||
|
|
free(str);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void sort(char **arr, int n) {
|
||
|
|
for (int i = 0; i < n; i++) {
|
||
|
|
for (int j = 0; j < n - 1; j++) {
|
||
|
|
if (strcmp(arr[j], arr[j + 1]) > 0) {
|
||
|
|
// Why I can't use swap() here?
|
||
|
|
char *tmp = arr[j];
|
||
|
|
arr[j] = arr[j + 1];
|
||
|
|
arr[j + 1] = tmp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|