Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Given linked list – head = [4,5,1,9], whi ...

Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted ...

Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted ...

You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k. Define a pair (u,v) which consists of one element from th ...

Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is th ...

Given a string containing only digits, restore it by returning all possible valid IP address combinations. ExampleInput: “25525511135” Output: [“255.2 ...

Given a positive 32-bit integer n, you need to find the smallest 32-bit integer which has exactly the same digits existing in the integer n and is gre ...

Given a circular array (the next element of the last element is the first element of the array), print the Next Greater Number for every element. The ...

You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all the next greater numbers for nums1’ ...

Given a directed graph, design an algorithm to find out whether there is a route between two nodes. ExampleGiven graph: 123456 A----->B----->C\ ...