Printing Matrix

This algorithm helps printing a matrix in spiral order.
TheAlgorithms · siriak · Jan 14, 2023 · Oct 2, 2022 · Oct 2, 2022 · Oct 8, 2022
commit fd2e7e8b1349dbe0c452dddb66727bee0f06f030
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+package com.thealgorithms.others;
+
+public class PrintAMatrixInSpiralOrder {
+    /**
+     * Search a key in row and column wise sorted matrix
+     *
+     * @param matrix matrix to be searched
+     * @param row    number of rows matrix has
+     * @param col    number of columns matrix has
+     * @author Sadiul Hakim : https://github.com/sadiul-hakim
+     */
+
+    public void print(int[][] matrix, int row, int col) {
+
+        //r traverses matrix row wise from first
+        int r = 0;
+        //c traverses matrix column wise from first
+        int c = 0;
+        int i;
+
+        while (r < row && c < col) {
+            //print first row of matrix
+            for (i = c; i < col; i++) {
+                System.out.print(matrix[r][i] + " ");
+
+            }
+
+            //increase r by one because first row printed
+            r++;
+
+            //print last column
+            for (i = r; i < row; i++) {
+                System.out.print(matrix[i][col - 1] + " ");
+            }
+
+            //decrease col by one because last column has been printed
+            col--;
+
+            //print rows from last except printed elements
+            if (r < row) {
+                for (i = col - 1; i >= c; i--) {
+                    System.out.print(matrix[row - 1][i] + " ");
+                }
+
+                row--;
+
+            }
+
+            //print columns from first except printed elements
+            if (c < col) {
+                for (i = row - 1; i >= r; i--) {
+                    System.out.print(matrix[i][c] + " ");
+                }
+                c++;
+            }
+
+        }
+
+    }
+
+    public static void main(String[] args) {
+        int[][] matrix = {
+                { 3, 4, 5, 6, 7 },
+                { 8, 9, 10, 11, 12 },
+                { 14, 15, 16, 17, 18 },
+                { 23, 24, 25, 26, 27 },
+                { 30, 31, 32, 33, 34 }
+        };
+
+        var printer = new PrintAMatrixInSpiralOrder();
+        printer.print(matrix, matrix.length, matrix[0].length);
+
+    }
+}