Package g3201_3300.s3248_snake_in_matrix

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    3248 - Snake in Matrix.

    Easy

    There is a snake in an n x n matrix grid and can move in four possible directions. Each cell in the grid is identified by the position: grid[i][j] = (i * n) + j.

    The snake starts at cell 0 and follows a sequence of commands.

    You are given an integer n representing the size of the grid and an array of strings commands where each command[i] is either "UP", "RIGHT", "DOWN", and "LEFT". It's guaranteed that the snake will remain within the grid boundaries throughout its movement.

    Return the position of the final cell where the snake ends up after executing commands.

    Example 1:

    Input: n = 2, commands = "RIGHT","DOWN"

    Output: 3

    Explanation:

    Example 2:

    Input: n = 3, commands = "DOWN","RIGHT","UP"

    Output: 1

    Explanation:

    Constraints:

    • 2 <= n <= 10

    • 1 <= commands.length <= 100

    • commands consists only of "UP", "RIGHT", "DOWN", and "LEFT".

    • The input is generated such the snake will not move outside of the boundaries.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer finalPositionOfSnake(Integer n, List<String> commands)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait