publicclassSolution {publicintremoveDuplicates(int[] nums) {if(nums.length == 0)return0;intwalker = 1;//每个的数量intcount = 1;//总类数量intloc = 1;//定位for(inti = 1 ; i < nums.length ; i++){if(nums[i] == nums[i-1]){if(walker < 2){ walker++; count++; }else{//出现...
Given a sorted array nums, 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 by modifying the input array in-place with O(1) extra memory. Example 1: Given nums = [1,1,2...
19} Reference:http://www.programcreek.com/2013/01/leetcode-remove-duplicates-from-sorted-array-ii-java/
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 retur...
Java Setclass stores only the distinct elements. We can use this feature to find the distinct elements in the array and then find unique and duplicate elements using the simple add and remove operations. The following code tries to add all elements from the array into theHashSet. Theadd()op...
Let’s look at a simple example of using distinct() to remove duplicate elements from alist. package com.journaldev.java; import java.util.ArrayList; import java.util.List; import java.util.stream.Collectors; public class JavaStreamDistinct { ...
Given an arraynumsand a valueval, remove all instances of that valuein-placeand return the new length. Do not allocate extra space for another array, you must do this bymodifying the input array in-placewith O(1) extra memory. The order of elements can be changed. It doesn't matter ...
Write a Java program to remove duplicates from a given stack. Sample Solution: Java Code: importjava.util.Scanner;importjava.util.HashSet;publicclassStack{privateint[]arr;privateinttop;// Constructor to initialize the stackpublicStack(intsize){arr=newint[size];top=-1;}// Method to push an...
In the following code, the predicate adds the current element to aHashSet. As aHashSetdoes not allow duplicate items, theadd()method returnsfalsefor them. All such duplicate items are removed from theList, and finally, theListcontains only the unique items. ...
16. Remove duplicates from array Write a Java program to remove duplicate elements from an array. Click me to see the solution 17. Find second largest array element Write a Java program to find the second largest element in an array. ...