Implement Traversal method

src/main/java/MainExercises.java

@@ -72,8 +72,48 @@ public class MainExercises
            - Number of columns: matrix[0].length (if rectangular)
    */
     public int[] spiralTraversal(int[][] matrix) {
-        // todo
+
-        return null;
+        int rows = matrix.length;
+        int cols = matrix[0].length;
+
+        int[] result = new int[rows * cols];
+
+        int top = 0, bottom = rows - 1, left = 0, right = cols - 1;
+        int id = 0;
+
+        while(top <= bottom && left <= right){ // reaching the center
+
+            for(int col = left; col <= right; col++){
+                result[id] = matrix[top][col];
+                id++;
+            }
+            top++;
+
+            for(int row = top; row <= bottom; row++){
+                result[id] = matrix[row][right];
+                id++;
+            }
+            right--;
+
+            if(top <= right){
+                for(int col = right; col >= left; col--){
+                    result[id] = matrix[bottom][col];
+                    id++;
+                }
+                bottom--;
+            }
+
+            if(left <= right){
+                for(int row = bottom; row >= top; row--){
+                    result[id] = matrix[row][left];
+                    id++;
+                }
+                left++;
+            }
+
+        }
+
+        return result;
     }
 
     /*