@tutorialhorizon
Objective: Given an array of integers (in particular order or permutation of a set of numbers), write an algorithm to find the lexicographically previous permutation of the given permutation with only one swap. This...
Objective: Given two integers N and K. Write an algorithm to find all the combinations of k numbers which sum to N. Conditions: All K numbers must be between 1 and 9 and unique....
Given- Given V vertices, what is the maximum number of edges can be added to make Acyclic Undirected Graph. Follow up – what is the maximum number of edges that can be added to...
Earlier we had discussed how to evaluate prefix expression where operands are of single-digit. In this article, we will discuss how to evaluate prefix expression for any number ( not necessarily single digit.) Prefix...
Objective: Given a two-dimensional array or matrix, Write an algorithm to print the given matrix in a zigzag manner or in other words print all the diagonals of the matrix. Example: int [][] grid...
Prefix notation is a notation for writing arithmetic expressions in which the operands appear after their operators. There are no precedence rules to learn. Let’s assume the below Operands are real numbers in real...
Earlier we had discussed how to evaluate postfix expressions where operands are of single-digit. In this article, we will discuss how to evaluate postfix expressions for any number ( not necessarily single digit.) Postfix...
Postfix notation is a notation for writing arithmetic expressions in which the operands appear before their operators. There are no precedence rules to learn, and parentheses are never needed. Because of this simplicity. Let’s...
Objective: Given a range, find all the numbers in the range which has prime set bits. Example: L = 4, R = 10 Output: 5 Explanation: 4 = 1 0 0 ( not prime)...
Objective: Given an arithmetic expression, write an algorithm to find out whether the expression contains duplicate parenthesis. Duplicate Parenthesis: Two contiguous parentheses with no elements between them can be called as duplicate parenthesis. Example:...
Objective: You are working on a project where QA team has automated set of test cases for the project, but these test cases have to be executed in a specific order since test cases...
Given a string with alphabets and numbers. Write an algorithm to find the maximum number in the string. If any number is greater than equal to Max_Value of integer then return the Max_Value. Example:...
Objective: Given a Prefix expression, write an algorithm to convert it into Postfix expression. Example: Input: Prefix expression: + A B Output: Postfix expression: A B + Input: Prefix expression: *-A/BC-/AKL Output: Postfix expression:...
Objective: Given a Roman number, write a program to convert it to Integer. Roman Number – Letters used in Roman numerals and the corresponding numerical values are given in the table below. Rules: ...
Objective: Given a Postfix expression, write an algorithm to convert it into prefix expression. Example: Input: Postfix expression: A B + Output: Prefix expression- + A B Input: Postfix expression: ABC/-AK/L-* Output: Infix expression:...
