leetcode #26 in cpp
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The question is to remove the duplicate within a sorted array and return the number of unique elements in the array.
Solution: keep a count of the unique numbers we have seen. The ith unique element should be saved in the (i-1)th entry in the array.
Code:
class Solution {public: int removeDuplicates(vector<int>& nums) { if(nums.empty()) return 0; int count = 1; for(int i = 1; i < nums.size(); i ++){ if(nums[i-1] != nums[i]) {//determine if nums[i] is duplicate nums[count] = nums[i]; count++; } } return count; }}; 0 0
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