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Category: Recursion

2D Matrix with Obstructions in it"> g6774 1

2D Matrix with Obstructions in it">Dynamic Programming — Count all paths in 2D Matrix with Obstructions in it

Objec­tive: Given two dimen­sional matrix, write an algo­rithm to count all pos­si­ble paths from top left cor­ner to bottom-right cor­ner. You are allowed to move only in two direc­tions, move right OR move down.…

g4266 0

Reverse a Linked List in groups of given size ‘K’

Objec­tive: Given a linked list and inte­ger ‘k’, write an algo­rithm to reverse the linked list in groups of size ‘k’. Exam­ple: Approach: Ear­lier we have seen how to reverse a linked list, solu­tion for…

g6774 9

Dynamic Programming — Longest Common Subsequence

Objec­tive: Given two string sequences, write an algo­rithm to find the length of longest sub­se­quence present in both of them. These kind of dynamic pro­gram­ming ques­tions are very famous in the inter­views like Ama­zon, Microsoft,…

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The Word Break Problem

Objec­tive : Given an string and a dic­tio­nary of words, find out if the input string can be bro­ken into a space-separated sequence of one or more dic­tio­nary words. Exam­ple: dic­tio­nary = [“I” , “have”,…

g6774 10

Dynamic Programming — Minimum Coin Change Problem

Objec­tive: Given a amount ‘A’ and n coins,   v1<v2<v3<.….……<vn . Write a pro­gram to find out min­i­mum num­bers of coins required to make the change for the amount ‘A’. Exam­ple: Amount: 5 Coins []…

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Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion)

Objec­tive: — Given a pre­order tra­ver­sal, con­struct BST from that, with­out using recur­sion. Input: Pre­order tra­ver­sal Sim­i­lar Prob­lem : This prob­lem is sim­i­lar to the Con­struct Binary Search Tree from a given Pre­order Traversal…