All Questions
20 questions
4votes
3answers
426views
Find the first missing positive integer in an array of integers
The problem is the one explained in Given an unsorted integer array, find the first missing positive integer Given an unsorted integer array, find the first missing positive integer. For ...
- 201
3votes
1answer
3kviews
Circuit builder that calculates resistance/current/voltage
I am somewhat new to programming. I've written a program that takes user input accepting voltages and resistors, and calculating total resistance/current/voltage in the circuit. I am looking for ways ...
1vote
1answer
329views
Rearrange an array in place such that the first and last halves are interleaved
Given an array of n elements in the following format { a1, a2, a3, a4, ….., an/2, b1, b2, b3, b4, …., bn/2 }. The task is shuffle the array to {a1, b1, a2, b2, a3, b3, ……, an/2, bn/2 } without ...
2votes
3answers
305views
Three Numbers in Java
Given three positive numbers A, B, and C. Find the number of positive integers less than D that are divisible by either of A, B or C. Input format The 1st argument given is an Integer A. ...
1vote
2answers
627views
Subset Sums in Java
Given an array of integers, print sums of all subsets in it. Output should be printed in increasing order of sums. Input : arr[] = {2, 3} Output: 0 2 3 5 Input : ...
1vote
3answers
6kviews
Sort all even numbers in ascending order and then sort all odd numbers in Descending order Java
Given an array of integers (both odd and even), the task is to sort them in such a way that the first part of the array contains odd numbers sorted in descending order, rest portion contains even ...
6votes
5answers
3kviews
Sort an array of 0s, 1s and 2s in Java
Write a program to sort an array of 0's,1's and 2's in ascending order. Input: The first line contains an integer 'T' denoting the total number of test cases. In each test cases, First ...
2votes
6answers
1kviews
Alone in a Couple implementation in Java
In a party everyone is in couple except one. People who are in couple have same numbers. Find out the person who is not in couple. Input: The first line contains an integer \$T\$ denoting ...
0votes
1answer
906views
Reversing the vowels in a String
Given a string, reverse only the vowels present in it and print the resulting string. Input: First line of the input file contains an integer T denoting the number of test ...
2votes
1answer
175views
Anagram checking implementation
Given two strings, check whether two given strings are anagram of each other or not. An anagram of a string is another string that contains same characters, only the order of characters can be ...
3votes
2answers
522views
Non repeating character in Java
Given a string s consisting of lowercase Latin Letters, find the first non repeating character in s. Input: The first line contains T denoting the number of testcases. Then follows ...
1vote
2answers
962views
Star Elements implementation in Java
Given an unsorted array. The task is to find all the star and super star elements in the array. Star are those elements which are strictly greater than all the elements on its right side. Super ...
2votes
2answers
503views
Greater on the right side in Java
Given an array of integers, replace every element with the next greatest element (greatest element on the right side) in the array. Since there is no element next to the last element, replace it ...
0votes
2answers
3kviews
Count the number of occurences of X's within a range in Java
Given an integer X within the range of 0 to 9, and given two positive integers as upper and lower bounds respectively, find the number of times X occurs as a digit in an integer within the ...
1vote
2answers
179views
Count total set bits
Im am solving Count total set bits: Find the sum of all bits from numbers 1 to N. Input: The first line of input contains an integer T denoting the number of test cases. The first line ...
