Longest Substring Without Repeating Characters

Given a string, we have to find the length of the longest substring without repeating characters. Let’s look into a few examples: Example   pwwkew 3 Explanation: Answer is “wke” with length 3 aav 2 Explanation: Answer is “av” with length 2 Approach-1 for Longest Substring Without Repeating Characters    Brute Force  …

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Implementation of Deque using Doubly Linked List

Problem Statement   The problem “Implementation of Deque using Doubly Linked List” states that you need to implement the following functions of Deque or Doubly Ended Queue using a doubly linked list, insertFront(x) : Add element x at the starting of Deque insertEnd(x) : Add element x at the end of …

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