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Category: Data Structure

December 12, 2021 Binary Tree / Data Structure / Recursion / Stack

Post-Order Traversal Of Binary Tree

Problem Statement: Postorder Traversal of a binary tree. Write a program for the postorder traversal of a binary tree. Example: Disclaimer:

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December 12, 2021 Binary Tree / Data Structure

Vertical Order Traversal of Binary Tree

Problem Statement: Vertical Order Traversal Of A Binary Tree. Write a program for Vertical Order Traversal order of a Binary Tree.

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December 12, 2021 Arrays / Data Structure

Merge two Sorted Arrays Without Extra Space

Problem statement: Given two sorted arrays arr1[] and arr2[] of sizes n and m in non-decreasing order. Merge them in

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December 12, 2021 Arrays / Data Structure / Queue

Implement Queue Using Array

Problem Statement: Implement Queue Data Structure using Array with all functions like pop, push, top, size, etc. Example: Input: push(4) push(14)

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December 11, 2021 Arrays / Data Structure

Merge Overlapping Sub-intervals

Problem Statement: Given an array of intervals, merge all the overlapping intervals and return an array of non-overlapping intervals. Examples

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December 11, 2021 Data Structure / Hashing / Linked List

Implement LRU Cache

Problem Statement: “Design a data structure that follows the constraints of Least Recently Used (LRU) cache”. Implement the LRUCache class:

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December 9, 2021 Arrays / Data Structure / Recursion

Combination Sum – 1

Problem Statement:  Given an array of distinct integers and a target, you have to return the list of all unique

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December 9, 2021 Arrays / Data Structure / Recursion

Subset Sum : Sum of all Subsets

Problem Statement: Given an array print all the sum of the subset generated from it, in the increasing order. Examples:

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December 9, 2021 Arrays / Data Structure / Recursion

Palindrome Partitioning

Problem Statement: You are given a string s, partition it in such a way that every substring is a palindrome.

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December 9, 2021 Arrays / Data Structure / Matrix

Rotate Image by 90 degree

Problem Statement: Given a matrix, your task is to rotate the matrix 90 degrees clockwise. Note: Rotate matrix 90 degrees

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