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 Given a non-negative integer x, compute and return the square root of x. Since the return type is an integer, the decimal digits are truncated,…
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…
CupertinoPicker widget is an iOS styled picker. Displays its children widgets on a wheel for selection and calls back when…
CupertinoContextMenu is an iOS-style context menu that popup when the user long-press the button. Result Find below code for CupertinoContextMenu…