g0001_0100.s0048_rotate_image.Solution.cs Maven / Gradle / Ivy

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104 LeetCode algorithm problem solutions

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namespace LeetCodeNet.G0001_0100.S0048_rotate_image {

// #Medium #Top_100_Liked_Questions #Top_Interview_Questions #Array #Math #Matrix
// #Data_Structure_II_Day_3_Array #Programming_Skills_II_Day_7 #Udemy_2D_Arrays/Matrix
// #Big_O_Time_O(n^2)_Space_O(1) #2024_01_04_Time_92_ms_(97.78%)_Space_45.7_MB_(9.23%)

public class Solution {
    public void Rotate(int[][] matrix) {
        (int height, int width) = (matrix.Length, matrix[0].Length);
        for (int row = 0; row < height - 1; row++) {
            for (int col = row + 1; col < width; col++) {
                (matrix[col][row], matrix[row][col]) = (matrix[row][col], matrix[col][row]);
            }
        }
        for (int col = 0; col < width / 2; col++) {
            int oppositeCol = width - 1 - col;
            for (int row = 0; row < height; row++) {
                (matrix[row][col], matrix[row][oppositeCol]) = (matrix[row][oppositeCol], matrix[row][col]);
            }
        }
    }
}
}