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  1. #include <stdio.h>
  2.  
  3. void swap (int *x, int *y){
  4. 	int temp = *x;
  5. 	*x = *y;
  6. 	*y = temp;
  7. }
  8.  
  9. void rev (int A[], int start, int end){
  10. 	while (start < end){
  11. 		swap (&A[start], &A[end]);
  12. 		start++;
  13. 		end--;
  14. 	}
  15. }
  16.  
  17. int main(){
  18. 	int n, A[105];
  19. 	scanf("%d", &n);
  20.  
  21. 	for (int i = 0; i < n; i++){
  22. 		scanf("%d", &A[i]);
  23. 	}
  24.  
  25. 	int i = n - 2;
  26. 	while (i >= 0 && A[i] < A[i + 1]){
  27. 		i--;
  28. 	}
  29.  
  30. 	if (i < 0){
  31. 		printf("0\n");
  32. 	}
  33. 	else{
  34. 			int j = n - 1;
  35. 		while (A[j] > A[i]){
  36. 			j--;
  37. 		}
  38.  
  39. 	swap(&A[i], &A[j]);
  40.  
  41. 	rev(A,i + 1, n - 1);
  42.  
  43. 	for(int k = 0; k < n; k++){
  44. 		printf("%d", A[k]);
  45. 		if (k < n) printf(" ");
  46. 		}
  47. 	}
  48. 	return 0;
  49. }
  50.  
Success #stdin #stdout 0s 5308KB
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5
3 1 2 5 4
stdout
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3 1 2 4 5
https://ideone.com/4gGMmF
language:
C (gcc 8.3)
created:
11 hours ago
visibility:
public

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