Category: Recursion

8

Dynamic Programming – Coin Change Problem

Objective: Given a set of coins and amount, Write an algorithm to find out how many ways we can make the change of the amount using the coins given. This is another problem in...

1

All N Length Strings from Given String of Length K

Objective: Print All N Length Strings from Given String of Length K where characters can appear multiple time. Example: String k = “ALGO” N=2 Result: AA LA GA OA AL LL GL OL AG...

0

Generate Well Ordered Passwords of a Given Length K

Objective: Generate Well Ordered Passwords of a Given Length K. Well ordered means that digits should be in increasing order in every generated password. Example: K = 7 1234567 1234568 1234569 1234578 1234579 1234589...

9

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” ,...

3

Backtracking – Knight’s Tour Problem

Objective : A knight’s tour is a sequence of moves of a knight on a chessboard such that the knight visits every square only once. If the knight ends on a square that is...

0

Backtracking – Search a Word In a Matrix

Objective : Given a 2D matrix of characters. Check whether the word exist in the matrix or not. If it exists then print its path. All movements are allowed (right, left, up, down and...

4

Backtracking – N Queens Problem

Objective : In chess, a queen can move as far as she pleases, horizontally, vertically, or diagonally. A chess board has 8 rows and 8 columns. The standard 8 by 8 Queen’s problem asks...

6

Backtracking – Rat In A Maze Puzzle

Given a maze, NxN matrix. A rat has to find a path from source to destination. maze[0][0] (left top corner)is the source and maze[N-1][N-1](right bottom corner) is destination. There are few cells which are...

0

Introduction To Backtracking Programming

What is Backtracking Programming?? Recursion is the key in backtracking programming. As the name suggests we backtrack to find the solution. We start with one possible move out of many available moves and try...

17

Dynamic Programming – Stairs Climbing Puzzle

Objective: A child is climbing up a staircase with n steps, and can hop either 1 step, 2 steps, or 3 steps at a time. Implement a method to count how many possible ways...

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