find the next higher number with the same digits c# code example

Example: Find next greater number with same set of digits C#

#include 
#include 
#include 
using namespace std;
 
void swap(char *a, char *b){
    char temp = *a;
    *a = *b;
    *b = temp;
}
 
void findNextNumber(char num[], int n)
{
    int i, j;
    for (i = n-1; i > 0; i--)
        if (num[i] > num[i-1])
           break;
    if (i==0)
    {
        cout << "Next number is not possible";
        return;
    }
    int x = num[i-1], smallest = i;
    for (j = i+1; j < n; j++) if (num[j] > x && num[j] < num[smallest])
            smallest = j;
 
    swap(&num[smallest], &num[i-1]);
    sort(num + i, num + n);
 
    cout << "Next number with same set of digits is " << num;
 
    return;
}
 
// Driver program to test above function
int main(){
    char digits[] = "534976";
    int len = strlen(digits);
    findNextNumber(digits, len);
    return 0;
}
Output:
Next number with same set of digits is 536479