Category: Difficulty Level

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Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed

Objective: Given two integers N and K, Write an algorithm to find possible combinations that add to K, from the numbers 1 to N.  Condition: An integer from 1 to N can be repeated...

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Stable Marriage Problem – Gale–Shapley Algorithm – Java

Stable Marriage Given N men and N women and the marriage preference order for each man and woman. Their marriage will be stable when these men and women marry in such a manner so...

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Insert a node in the given sorted linked list.

Objective: Given a linked list in which nodes are sorted in ascending order. Write an algorithm to insert a given node into the linked list so that all the nodes in the list will...

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Construct the largest number from the given array.

Objective: Given an array of integers, write an algorithm to construct the largest number possible by appending the array elements.  Example: Given Input: [7, 78] Largest Number Possible: 787 Explanation: two possibilities are 778...

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Given an array, print all unique subsets with a given sum.

Objective: Given an array of integers and number N, Write an algorithm to find and print all the subsets of the array for which sum is equal to N. Example: input [] = {6,2,7,8,2,4,1,3,7,5}...

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Sum of length of subsets which contains given value K and all elements in subsets are less than equal to K.

Objective: Given an array of numbers and integer K. Your task is to find lengths of all the subsets which contain value K and all elements in the subset are less than equal to...

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Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Objective: Given an integer N, Write an algorithm to select numbers from 1 to 9 and make combinations such that its sum to N.  Example: N= 5 Output:  [1, 4] [2, 3] [5] N...

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Activity Selection Problem

Objective: The activity selection problem is a combinatorial optimization problem concerning the selection of non-conflicting activities to perform within a given time frame, given a set of activities each marked by a start time...

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Find the sum of overlapping elements in two sets

Objective: Given two sets of integers, write an algorithm to print the sum of overlapping elements in two sets. Note: Elements in each set are unique or there are no duplicates within a set....

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Check if Graph is Bipartite – Adjacency List using Breadth-First Search(BFS)

Objective: Given a graph represented by the adjacency List, write a Breadth-First Search(BFS) algorithm to check whether the graph is bipartite or not. Earlier we have solved the same problem using Depth-First Search (DFS)....

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