See possible permutations of string “ABC” in the picture Now what can we see from the picture that for first step, We have to rotate character at first position to every next position in given String ABC. in 2nd step , we have to rotate 2nd character position with every…

Problem Statement: Sometime we don’t get call back from Picasso third party library when image loading process is completed and our image Views just keep showing the placeholder and not the real image. Sometime our animation also does not work if it is dependent on Image load completion call back…

Explaining here , How Gradle LifeCycle Works during build phase: 1.) Initialization Phase (Setting.gradle file) -> All Projects are listed in this file since it is required to make new Instance for every module Project so that Gradle can make queue to run build.gradle …

Given an array of positive numbers, where each element represents the max number of jumps that can be made forward from that element, write a program to find the minimum number of jumps needed to reach the end of the array (starting from the first element). If an element is 0, then we cannot move through that element. package practice; public class ArrayJump { public int countMinJumps(int[] jumps) { if (jumps == null || jumps.length < 2) { return 0; } int[] minJumps = new int[jumps.length]; minJumps[0] = 0;

I am writing the basic cache technique here to make it faster, Thread Safe, and with cache Expiry Support. Component used: LinkedHashMap a.) For saving Entry in map to get value in O(1) b.) To remove oldest entry from Cache map if size exceeds from a limit with accessOrder property…

Depth First Search (DFS) Implementation Generate list of possible words from a character matrix Find length of the longest path in the matrix with consecutive characters Replace all occurrences of 0 that are surrounded by 1 in a binary matrix Replace all occurrences of 0 that are not surrounded by…

class Solution { public List<String> generateParenthesis(int n) { List<String> output = new ArrayList<String>(); if(n == 0){ return output…

When to use WorkManager: 1.) If Task is defferable , repeated with no exact time, Need to be completed sure even on Reboot, Then use WorkManager. 2.) If any work is triggered online, use Push Notification to trigger WorkManager Work. 3.) If you want to send Data instantly from Mobile…

In this post , I just want to give basic understanding for those who just started the memory Profiling to optimise memory for Android. Android kernel was first developed for Android Phone Memory and it was based on Linux-Kernel. The main difference between Android and all other Linux-Kernel based systems…