# Remove duplicates from Sorted array "Leetcode", array, Array,java, algorithm

Source: Internet
Author: User

Remove Duplicates from Sorted Array

Given a sorted array, remove the duplicates in place such, all element appear only once and return the new L Ength.

Do the allocate extra space for another array, and you must does this on place with constant memory.

For example,
Given input array nums = `[1,1,2]` ,

Your function should return length = `2` , with the first of the elements of nums being and `1` `2` Respectivel Y. It doesn ' t matter what are you leave beyond the new length.

Test instructions

Given an array of nums[], calculate the length of the data after it is removed (no new memory space is opened)

Problem Solving Ideas:

Set two flag bits left=0;right=1

Use left and right to compare, if the same skip right to continue, if not the same then put right in the back position

`1  Public classSolution {2      Public intRemoveDuplicates (int[] nums) {3         intlen=nums.length;4         if(len==0)5             return0;6        intI=0; 7         for(intj=1;j<len;j++){8            if(nums[i]!=Nums[j]) {9i++; Tennums[i]=Nums[j]; One                                        A            } -  -         } the         returnI+1; -     } -}`

Remove duplicates from Sorted array "Leetcode", array, Array,java, algorithm

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