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  1. /******************************************************************************
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  8.  
  9.  
  10. int singleNumber(int nums[], int size) {
  11.     int result = 0;
  12.     for (int i = 0; i < size; i++) {
  13.         result ^= nums[i];  
  14.     }
  15.     return result;
  16. }
  17.  
  18. int main() {
  19.     int n;
  20.  
  21.  
  22.     printf("Enter number of elements: ");
  23.     scanf("%d", &n);
  24.  
  25.     int arr[n];
  26.  
  27.     printf("Enter %d elements:\n", n);
  28.     for (int i = 0; i < n; i++) {
  29.         scanf("%d", &arr[i]);
  30.     }
  31.  
  32.  
  33.     int unique = singleNumber(arr, n);
  34.     printf("The element that appears only once is: %d\n", unique);
  35.  
  36.     return 0;
  37. }
  38.  
  39.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
Enter number of elements: Enter 0 elements:
The element that appears only once is: 0
https://ideone.com/izYNsw
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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