Sorting: Given an array, return the number of steps required to make array elements same
Problem Statement: You are given an array, you need to return the minimum number of steps to make the array elements same. You can increment…
Sorting: Get union of 2 sorted arrays
Problem Statement: You are given 2 sorted arrays, You need to return the union of union of 2 arrays such that the new array will have all…
Sorting: Given an array, sort the elements alternatively
Problem Statement: You are given an array, rearrange the array in such a way that first max, first min, second max, second min etc Example:…
Stack: Given an expression, get the minimum bracket reversal to make the expression balanced
Problem Statement: You are given an expression with “{” and “}” and might be balanced. Find the minimum number of…
Stack: Delete middle element of a stack
Problem Statement: Given a stack, you need to delete the middle element. You should not use any additional data structure. Example: Input: [1,…
Stack: Delete consecutive same words in a sequence
Problem Statement: You are given a array of strings. You need to find the number of words after pairwise deletion. Example: Input: arr[] =…
Stack: Given a string with balanced brackets, you need to print the bracket number
Problem Statement: You are given a sting s, containing bracket and character. You need to find the bracket number for each bracket in the…
Stack: Given 2 arrays, check if an array is stack permutation of another
Problem Statement: You are given 2 array of same size and the elements are unique. You need to check if a[] is a stack permutation of b[]. You…
Stack: Stock Span Problem
Problem Statement: You are given an array, that represents the stock of the ith day. You need to return the stock span for the ith day, i.e…
Stack: Given a string expression, check if it is balanced expression
Problem Statement: You are given a string that has braces of types “{ }”, “[ ]”, “( )”. In some places it…