#include #include #include #include /** * https://leetcode-cn.com/problems/reverse-string/description/ * 反转字符串 */ char *reverseString(char *s) { int len = strlen(s); for (int i = 0; i < len/2; i++) { s[i] ^= s[len - 1 - i]; s[len - 1 - i] ^= s[i]; s[i] ^= s[len - 1 - i]; } return s; } void print_r(int *a, int len) { for (int i = 0; i < len; i++) { printf("%d\t", a[i]); } printf("\n"); } int main() { char s[] = "hello"; printf("%s\n", reverseString(s)); getchar(); return 0; }