[Solved] C++ string swap character places

is there a way to swap character places in a string? For example if I have "03/02" I need to get "02/03".
Any help is appreciated!

Enquirer: RnD


Solution #1:


#include <string>
#include <algorithm>

std::string s = "03/02";
std::swap(s[1], s[4]);
Respondent: Kerrek SB

Solution #2:

std::swap(str[1], str[4]);

Solution #3:

There is. 🙂

std::swap(str[i], str[j])

Respondent: Paul Manta

Solution #4:

Wait, do you really want such a specific answer? You don’t care about if the string is 2/3 instead of 02/03?

#include <string.h>
#include <iostream>

bool ReverseString(const char *input)
    const char *index = strchr(input, (int) '/');
    if(index == NULL)
        return false;

    char *result = new char[strlen(input) + 1];

    strcpy(result, index + 1);
    strcat(result, "/");
    strncat(result, input, index - input);

    printf("%srn", result);
    delete [] result;

    return true;

int main(int argc, char **argv)
    const char *test = "03/02";
Respondent: Mahmoud Al-Qudsi

The answers/resolutions are collected from stackoverflow, are licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0 .

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