Question

How to print lexicographic permutations of 0, 1 and 2 as strings in C

Answer 1

#include <stdio.h>
  
int main(void) {
    char arr[4] = "";
    
    for (int i = 0; i < 3; i++) {  
        for (int j = 0; j < 3; j++) {  
            for (int k = 0; k < 3; k++) {  
                if (i != j && i != k && j != k)  {
                    arr[0] = i + '0';
                    arr[1] = j + '0';
                    arr[2] = k + '0';
                    puts(arr);
                }
            }  
        }  
    }  
    
    
      
    return 0;
}
  
  
  
    
/*
run:
    
012
021
102
120
201
210
  
*/

 

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