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22 lines
801 B
Markdown
22 lines
801 B
Markdown
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# [026. Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array/description/)
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# 思路
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由于是已经排序好的数组,所以相同的数肯定是相邻的,遍历数组时跳过与上一个数重复的数即可。
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可以用一个count记录在下标count及之前是没有重复的数组, count初始化为0,然后从前往后遍历,若a[i]==a[count]说明重复,不更新count,
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否则应该让count++。注意单独判断空数组。
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# C++
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``` c++
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class Solution {
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public:
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int removeDuplicates(vector<int>& nums) {
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if(nums.empty()) return 0;
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int count = 0;
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for(int i = 1; i < nums.size(); i++){
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if(nums[i] != nums[count]) nums[++count] = nums[i];
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}
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return count+1;
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}
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};
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```
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