simulation

Multiply Strings

Multiply Strings requires simulating integer multiplication using only string operations without direct numeric conversi…

Spiral Matrix

Given an m x n matrix, return all elements in spiral order starting from the top-left corner.

Spiral Matrix II

Generate a spiral matrix of size n x n, filled with elements from 1 to n² in spiral order, for interview-focused solving…

Add Binary

Add Binary involves summing two binary strings and returning the result as a binary string using math and string manipul…

Text Justification

Text Justification requires packing words into lines to match a specified width, ensuring even distribution of spaces.

Add Digits

Add Digits involves repeatedly summing digits of a number until a single digit is obtained.

Game of Life

Solve the Game of Life by updating each cell based on its eight neighbors using Array and Matrix simulation patterns eff…

Fizz Buzz

Generate a list from 1 to n replacing multiples of 3 with Fizz, 5 with Buzz, and both with FizzBuzz efficiently.

Add Strings

Given two non-negative integers as strings, sum them and return the result as a string without converting to integers di…

Teemo Attacking

Compute the total poisoned time Ashe experiences from Teemo's attacks using an array-based simulation approach efficient…

Diagonal Traverse

Traverse a matrix diagonally and return all elements in the specific zig-zag order required by the problem pattern.

Complex Number Multiplication

This problem requires multiplying two complex numbers, given in string form, and returning the result in the same format…

Reshape the Matrix

Reshape the Matrix involves transforming a 2D matrix into a new matrix with the same elements in row-major order, follow…

Fraction Addition and Subtraction

Solve fraction addition and subtraction by handling expressions, calculating results, and simplifying fractions to irred…

Solve the Equation

Solve the equation for the variable 'x' and determine its value or state if there is no solution or infinite solutions.

Robot Return to Origin

Judge whether a robot returns to the origin after a sequence of moves using string manipulation and simulation.

Baseball Game

Simulate baseball score operations using a stack-based approach to compute the final score after all operations.

Asteroid Collision

Determine the final positions of moving asteroids using a stack-based simulation for efficient collision resolution in l…

Contain Virus

Contain Virus involves using array-based Depth-First Search to contain viral spread by building walls around infected re…

Flipping an Image

Flip each row of a binary matrix horizontally and invert its values efficiently using a two-pointer scanning approach.

Backspace String Compare

Compare two strings after processing backspaces using efficient two-pointer scanning and careful invariant tracking to e…

Transpose Matrix

Transpose Matrix problem requires flipping a matrix's rows and columns to return the transposed version.

Walking Robot Simulation

The Walking Robot Simulation problem involves moving a robot in an infinite grid and calculating its furthest distance f…

Spiral Matrix III

Solve the Spiral Matrix III problem by simulating the movement across a matrix with specific constraints on direction an…