【Remove Duplicates from Sorted Array】cpp

标签：

题目：

https://leetcode.com/problems/remove-duplicates-from-sorted-array/

Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.

Do not allocate extra space for another array, you must do this in place with constant memory.

For example,
Given input array A = [1,1,2],

Your function should return length = 2, and A is now [1,2].

代码：

class Solution {
public:
    int removeDuplicates(int A[], int n) {
        if( n==0 ) return 0;
        int index = 0;
        for (unsigned int i=1; i<n; i++)
        {
            if( A[index]!=A[i] )
            {
                A[++index] = A[i];
            }
        }
        return index+1;
    }
};

Tips:

O(n)时间复杂度 O(1)空间复杂度

常用数组去重技巧 记住即可

【Remove Duplicates from Sorted Array】cpp

标签：

原文地址：http://www.cnblogs.com/xbf9xbf/p/4423522.html