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Feb 19th, 2017
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  1. import java.util.HashMap;
  2.  
  3. public class theUniqueNum {
  4.  
  5. public int find(int[] nums) {
  6. HashMap<Integer, Integer> map = new HashMap<>();
  7. for(int i =0; i<nums.length;i++){
  8. int count = map.getOrDefault(nums[i], 0);
  9. count++;
  10. map.put(nums[i], count);
  11. }
  12. int i =0;
  13. for(; i<nums.length;i++){
  14. if(map.get(nums[i])==1){
  15. break;
  16. }
  17.  
  18. }
  19. return i;
  20. }
  21.  
  22. }
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