136:只出现一次的数字
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src/main/java/leetcode/editor/cn/SingleNumber.java
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src/main/java/leetcode/editor/cn/SingleNumber.java
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//给定一个非空整数数组,除了某个元素只出现一次以外,其余每个元素均出现两次。找出那个只出现了一次的元素。
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//
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// 说明:
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//
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// 你的算法应该具有线性时间复杂度。 你可以不使用额外空间来实现吗?
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//
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// 示例 1:
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//
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// 输入: [2,2,1]
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//输出: 1
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//
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//
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// 示例 2:
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//
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// 输入: [4,1,2,1,2]
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//输出: 4
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// Related Topics 位运算 数组
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// 👍 1926 👎 0
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package leetcode.editor.cn;
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//136:只出现一次的数字
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class SingleNumber{
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public static void main(String[] args) {
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//测试代码
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Solution solution = new SingleNumber().new Solution();
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}
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//力扣代码
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//leetcode submit region begin(Prohibit modification and deletion)
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class Solution {
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public int singleNumber(int[] nums) {
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int xor = 0;
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for (int num : nums) {
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xor ^= num;
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}
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return xor;
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}
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}
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//leetcode submit region end(Prohibit modification and deletion)
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}
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src/main/java/leetcode/editor/cn/SingleNumber.md
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src/main/java/leetcode/editor/cn/SingleNumber.md
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<p>给定一个<strong>非空</strong>整数数组,除了某个元素只出现一次以外,其余每个元素均出现两次。找出那个只出现了一次的元素。</p>
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<p><strong>说明:</strong></p>
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<p>你的算法应该具有线性时间复杂度。 你可以不使用额外空间来实现吗?</p>
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<p><strong>示例 1:</strong></p>
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<pre><strong>输入:</strong> [2,2,1]
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<strong>输出:</strong> 1
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</pre>
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<p><strong>示例 2:</strong></p>
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<pre><strong>输入:</strong> [4,1,2,1,2]
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<strong>输出:</strong> 4</pre>
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<div><div>Related Topics</div><div><li>位运算</li><li>数组</li></div></div>\n<div><li>👍 1926</li><li>👎 0</li></div>
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