Method singleNumber

Java/single-number.java:20–29

(int[] nums)

 */
class Solution {
	public int singleNumber(int[] nums) {
		int aloneNum = nums[0];

		for (int i = 1; i < nums.length; i++) {
			aloneNum ^= nums[i];
			// System.out.println(aloneNum);
		}

		return aloneNum;
	}
}