In postfix to infix conversion problem, we have given expression in postfix notation. Write a program to convert the given notation in infix notation. Infix Notation In this notation, the operators are written between the operands. It is similar to how we generally write an expression. For instance: A + …
In the Nth Catalan number problem, we have given an integer n. Find the first n Catalan numbers. Catalan numbers are a series of positive integers which is seen in many counting problems. They are used to count – BSTs (Binary search trees) with n keys. Certain types of lattice …
In the Valid Number problem we have given a string, check if it can be interpreted into a valid decimal number. It is to be noted that, for a given string to be interpreted as a valid decimal number. It should contain the following characters: Numbers 0-9 Exponent – “e” …
The Pascal Triangle is a very good Leetcode problem that is asked so many times in Amazon, Microsoft, and other companies. we have given non-negative integer rows, print first rows rows of the pascal triangle. Example rows = 5 rows = 6 Types of solution for Pascal Triangle Leetcode Dynamic Programming …
In Power of Two problem we have given an integer, check if it is the power of 2 or not. A number in the power of two if it has only one set bit in the binary representation. Let’s see one example of a number that contains only one set …
What is Stone Game problem? Stone Game LeetCode – Two players A and B are playing a stone game. There are even numbers of piles each pile containing some stones and the total stones in all the piles is odd. A and B are supposed to pick a pile either …
Integer to Roman conversion. We have given a number N and we need to print the Roman number of N. Roman numbers are represented by the use of {I, V, X, L, C, D, M} values. Let’s see some examples for good understanding. Input Format Only a single line containing …
Add two numbers is a problem in which we have given two non-empty linked list representing a non-negative integer. The digit are store in reverse order and every node must contain only a single digit. Add the two numbers and print the result by using a linked list. Input Format …
Sieve of Eratosthenes is an algorithm in which we find out the prime numbers less than N. Here N is an integer value. This is an efficient method to find out the prime numbers to a limit. By using this we can find out the prime numbers till 10000000. Here …
In Missing Number problem we have given an array of size N containing a number from 0 to N. All the values in the array are unique. We need to find the missing number which is not present in the array and that number lies between 0 to N. Here …