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  1. #include <stdio.h>                                                                                                                                            
  2.  
  3. int singleNumber(int* nums, int numsSize) {                                                                                                                   
  4.     int n = 0;                                                                                                                                                
  5.     int i;                                                                                                                                                    
  6.     for (i = 0; i < numsSize; i++) {                                                                                                                          
  7.         n ^= nums[i];                                                                                                                                         
  8.     }                                                                                                                                                         
  9.     return n;                                                                                                                                                 
  10. }                                                                                                                                                             
  11.  
  12. int main() {                                                                                                                                                  
  13.     int nums[] = {1, 1, 2, 2, 3, 4, 4, 5, 5};                                                                                                                 
  14.     printf("%d\n", singleNumber(nums, (int)sizeof(nums)/sizeof(int)));                                                                                        
  15. }
Success #stdin #stdout 0s 2156KB
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https://ideone.com/V05MZf
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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