Given a collection of intervals, merge all overlapping intervals. ExampleNo.1Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Explan ...

Given a string s, return all the palindromic permutations (without duplicates) of it. Return an empty list if no palindromic permutation could be form ...

Given a string, determine if a permutation of the string could form a palindrome. ExampleNo.1Input: s = “code” Output: False Explanation:No solution N ...

Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. ExampleMovingAverage m = new MovingA ...

Given two lists A and B, and B is an anagram of A. B is an anagram of A means B is made by randomizing the order of the elements in A. We want to find ...

Given a list of Connections, which is the Connection class (the city name at both ends of the edge and a cost between them), find some edges, connect ...

Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],…] (si < ei), find the minimum number of conference roo ...

Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],…] (si < ei), determine if a person could attend all me ...

Given a knight in a chessboard n * m (a binary matrix with 0 as empty and 1 as barrier). the knight initialze position is (0, 0) and he wants to reach ...

Given a knight in a chessboard (a binary matrix with 0 as empty and 1 as barrier) with a source position, find the shortest path to a destination posi ...