Question

How to sort the digits of a number in ascending order with C++

Answer 1

#include <iostream>

int main() {
    int n = 2431;
    int sortedNumber = 0;

    for (int i = 0; i < 10; i++) {
        int digit = n % 10;
        int tmp = n / 10;
        while (digit || tmp) {
            if (digit == i) 
                sortedNumber = sortedNumber * 10 + digit;
            digit = tmp % 10;
            tmp = tmp / 10;
        }
    }
    std::cout << sortedNumber;
    
    return 0;
}



/*
run:

1234

*/

 

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