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#include <iostream>
#include <cstring>
/* Два начина по които да имплементираме обръщането на низа */
void revText1(unsigned left, unsigned right, char* str) {
if (left < right) {
char tmp = str[left];
str[left] = str[right];
str[right] = tmp;
revText1(left + 1, right - 1, str);
}
}
void revText2(char* left, char* right) {
if (left < right) {
char tmp = *left;
*left = *right;
*right = tmp;
revText2(left + 1, right - 1);
}
}
int main() {
const unsigned MAX_LEN = 1024;
char line[MAX_LEN];
std::cin.getline(line, MAX_LEN);
// revText1(0, strlen(line) - 1, line);
revText2(line, line + strlen(line) - 1);
std::cout << line << std::endl;
return 0;
}
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