Add two algorithms with matrixes (#3364)

src/main/java/com/thealgorithms/others/PrintAMatrixInSpiralOrder.java

@@ -0,0 +1,65 @@
+package com.thealgorithms.others;
+
+import java.util.ArrayList;
+import java.util.List;
+
+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 List<Integer> 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;
+
+        List<Integer> result = new ArrayList<>();
+
+        while (r < row && c < col) {
+            // print first row of matrix
+            for (i = c; i < col; i++) {
+                result.add(matrix[r][i]);
+            }
+
+            // increase r by one because first row printed
+            r++;
+
+            // print last column
+            for (i = r; i < row; i++) {
+                result.add(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--) {
+                    result.add(matrix[row - 1][i]);
+                }
+
+                row--;
+
+            }
+
+            // print columns from first except printed elements
+            if (c < col) {
+                for (i = row - 1; i >= r; i--) {
+                    result.add(matrix[i][c]);
+                }
+                c++;
+            }
+
+        }
+        return result;
+    }
+
+}

src/main/java/com/thealgorithms/searches/SearchInARowAndColWiseSortedMatrix.java

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+package com.thealgorithms.searches;
+
+import java.util.Arrays;
+
+public class SearchInARowAndColWiseSortedMatrix {
+    /**
+     * Search a key in row and column wise sorted matrix
+     *
+     * @param matrix matrix to be searched
+     * @param value  Key being searched for
+     * @author Sadiul Hakim : https://github.com/sadiul-hakim
+     */
+
+    public int[] search(int[][] matrix, int value) {
+        int n = matrix.length;
+        // This variable iterates over rows
+        int i = 0;
+        // This variable iterates over columns
+        int j = n - 1;
+        int[] result = { -1, -1 };
+
+        while (i < n && j >= 0) {
+            if (matrix[i][j] == value) {
+                result[0] = i;
+                result[1] = j;
+                return result;
+            }
+            if (value > matrix[i][j]) {
+                i++;
+            } else {
+                j--;
+            }
+
+        }
+        return result;
+    }
+}