26. Remove Duplicates from Sorted Array

标签：should   ant   func   color   return   extra   有序   element   another   

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 nums = [1,1,2],

Your function should return length = 2, with the first two elements of nums being 1 and 2 respectively. It doesn‘t matter what you leave beyond the new length.

给定一个有序数组，返回数组中无重复数字的个数

C++（32ms）：

 1 class Solution {
 2 public:
 3     int removeDuplicates(vector<int>& nums) {
 4         int res = 1 ;
 5         int len = nums.size() ;
 6         if (len < 1)
 7             return 0 ;
 8         for (int i = 0 ; i< len-1 ; i++){
 9             if (nums[i] != nums[i+1]){
10                 nums[res] = nums[i+1] ;
11                 res++ ;
12             }
13         }
14         return res ;
15     }
16 };

26. Remove Duplicates from Sorted Array

标签：should   ant   func   color   return   extra   有序   element   another   

原文地址：http://www.cnblogs.com/-Buff-/p/7543600.html