Problem Every valid email consists of a local name and a domain name, separated by the ‘@’ sign. Besides lowercase letters, the email may contain one or…
Problem Given the head of a sorted linked list, delete all duplicates such that each element appears only once. Return the linked list sorted as well.…
Problem You are given a large integer represented as integer array digits, where each digits[i] is the ith digit of…
Problem Given a sorted array of distinct integers and a target value, return the index if the target is found.…
Problem Given a sorted array of distinct integers and a target value, return the index if the target is found.…
Problem Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of…
Problem Given a string s consisting of some words separated by some number of spaces, return the length of the…
Date Picker is very usefull fuction which shows a picker dialog to select date. Please find below code for a…
Android provides many ways of storing data of an application. One of these ways is called Shared Preferences. Shared Preferences…