LeetCode-Single Number
2015-05-01 22:02
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数组中从第一个数开始，与后面的每一个数都异或，相同的数都被异或为0，最后剩下的就是Single Number了
public int singleNumber(int[] A) {
int result = A[0];
int n = A.length;
if(n == 1)
return result;
for(int i = 1; i < n; i++)
result ^= A[i];
return result;
}
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