LeetCode---Remove Duplicates from Sorted Array

标签：leetcode   array   sort   

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].

class Solution 
{
public:
    int removeDuplicates(int A[], int n) 
    {
        if(n == 0 || n == 1 )
            return n;
        int loc = 0;
        int i=1;
        while(i< n && A[i-1] <= A[i])
        {
            if(A[i] == A[loc])
                i++;
            else
            {
                swap(A,loc+1,i);
                loc++;
                i++;
            }
        }
        return loc+1;
    }
    void swap(int* a, int i, int j)
    {
        int temp = a[i];
        a[i] = a[j];
        a[j] = temp;
    }
};

LeetCode---Remove Duplicates from Sorted Array

标签：leetcode   array   sort   

原文地址：http://blog.csdn.net/shaya118/article/details/42610875