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Narendra Kumar has Published 191 Articles

Narendra Kumar
497 Views
Problem statementGiven a string of consecutive digits and a number Y, the task is to find the number of minimum sets such that every set follows the below rule −Set should contain consecutive numbersNo digit can be used more than once.The number in the set should not be more than ... Read More

Narendra Kumar
333 Views
DescriptionGiven an array of N numbers which have a permutation of first N numbers. In a single operation, any prefix can be reversed. The task is to find the minimum number of such operations such that the numbers in the array are in sorted in increasing order.ExampleIf array is {1, ... Read More

Narendra Kumar
299 Views
Problem statementGiven a string of parentheses. It can container opening parentheses ’(‘ or closing parentheses ‘)’. We have to find minimum number of parentheses to make the resulting parentheses string is valid.ExampleIf str = “((()” then we required 2 closing parentheses i.e ‘))’ at end of stringAlgorithmCount opening parenthesesCount closing ... Read More

Narendra Kumar
1K+ Views
Problem statementGiven N glasses having water, and a list of each of their capacity. The task is to find the minimum number of bottles required to fill out exactly K glasses. The capacity of each bottle is 100 units.ExampleIf N = 5, K = 4, capacity[] = {1, 2, 3, ... Read More

Narendra Kumar
427 Views
Problem statementGiven a string, find minimum characters to be appended to make a string palindrome.ExampleIf string is abcac then we can make string palindrome by appending 2 highlighed characters i.e. abcacbaAlgorithmCheck if string is already palindrome, if yes then no need to append any characters.One by one remove a character ... Read More

Narendra Kumar
409 Views
Problem statementGiven n strings that are permutations of each other. We need to make all strings same with an operation that moves first character of any string to the end of it.ExampleIf arr[] = {“abcd”, “cdab”} then 2 moves are required.Let us take first string “abcd”. Move character ‘a’ to ... Read More

Narendra Kumar
388 Views
Problem statementGiven a binary string in which we can flip all 1’s in left part and all 0’s in right part. The task is to calculate minimum flips required to make all 1’s in left and all 0’s in rightExampleGiven binary string is 0010101. In this string there are 3 ... Read More

Narendra Kumar
275 Views
DescriptionGiven two integers a and b, find the smallest possible height such that a triangle of atleast area ‘a’ and base ‘b’ can be formed.ExampleIf a = 16 and b = 4 then minimum height would be 8AlgorithmArea of triangle can be calculate using below formula −area = ½ * ... Read More

Narendra Kumar
286 Views
Problem statementGiven two positive integer N and X. The task is to express N as a sum of powers of X (X0 + X1 +…..+ Xn) such that the number of powers of X should be minimum.Print the minimum number of power of N used to make the sum equal ... Read More

Narendra Kumar
581 Views
Problem statementWe are given N points in a Cartesian plane. Our task is to find the minimum number of points that should be removed in order to get the remaining points on one side of any axis.If given input is {(10, 5), (-2, -5), (13, 8), (-14, 7)} then if ... Read More