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need define int first
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notes/LeetCode第268号问题:缺失数字.md

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -40,8 +40,9 @@
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class Solution {
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public int missingNumber(int[] nums) {
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int res = 0;
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int i = 0;
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//注意数组越界情况
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for (int i = 0; i < nums.length;i++){
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for (; i < nums.length;i++){
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// i 表示完整数组中的数字,与原数组中的数字 nums[i] 进行异或,再与保存的结果异或
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res = res^i^nums[i];
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}

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