Efficient Robot Problem – Find Minimum Trips
Problem: There is N number of items that need to be transferred from one place to another by a robot. Each item has a specific weight. The robot can carry maximum weight K in...
Category: Software Development Engineer in Test
Given an array, count the number of pairs with a given sum.
Objective: Given an array of integers, write a program to count all the pairs with the given sum. Example: Given array: [1, 5, 7, 1, -1], Sum= 6 Total Pairs: 3 Note: pairs are...
Two Sum Problem
Objective: Given an array of integers, and k. Write a program to find indexes of two elements in an array which sum is equal to K. Example: Given array: [5, 4, 7, 3, 9,...
Find if any two intervals overlap in given intervals
Objective: Interval is defined as [start, end]- the start of an interval to the end of the interval. Given a list of Intervals. Your task is to check if any two intervals overlap. Example:...
Find all subsets of size K from a given number N (1 to N)
Objective: Given two integers N and K, Write an algorithm to find subsets of size K from the numbers 1 to N. Example: N = 5 K = 3 Output: [1, 2, 3] [1,...
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...
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...
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...
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...
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...
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....
Check the completeness of given binary tree | Set 2 – Using Level Order Traversal
Objective: Given a binary tree, write an algorithm to determine whether the tree is complete or not using Level order traversal. Earlier we had solved this problem by counting the number of nodes in...
Check the completeness of given binary tree | Set 1 – Using Node Count
Objective: Given a binary tree, write an algorithm to determine whether the tree is complete or not. Complete Binary Tree: A binary tree T with n levels is complete if all levels except possibly...
Check if the given binary tree is Full or not.
Objective: Given a binary tree, write an algorithm to check if the tree is Full or not. Full binary tree: A binary tree T is full if each node is either a leaf or...
Print Stack in reverse order.
Objective: Given a stack, write a program to print the stack elements in reverse order. Example: Approach: Use Temporary stack: Take temporary stack, and copy all the items from the given stack to a...