FilesExpand file tree

 master

/

SingleNumber.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

23 lines (19 loc) · 517 Bytes

 master

/

SingleNumber.java

Copy path

Top

File metadata and controls

• Code
• Blame

23 lines (19 loc) · 517 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

package algorithms.easy;

import java.util.HashMap;

import java.util.Map;

public class SingleNumber {

public int singleNumber(int[] nums) {

if (nums.length == 1) {

return nums[0];

}

Map<Integer, Integer> stash = new HashMap<>();

for (int num : nums) {

if (stash.containsKey(num)) {

stash.remove(num);

} else {

stash.put(num, 1);

}

}

return stash.keySet().iterator().next();

}

}