table util commit

TableUtilities.java

@@ -1,15 +1,63 @@
- 
+import java.lang.StringBuilder;
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        
+        StringBuilder sb = new StringBuilder();
+        
+        for (int i = 1; i < 6; i++) {
+            for (int j = 1; j < 6; j++) {
+                int product = i*j;
+                sb.append(" ");
+                if (product < 10) {
+                    sb.append(" ");
+                }
+                sb.append(product + " |");
+            }
+            sb.append("\n");
+        }
+        return sb.toString();
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        
+        StringBuilder sb = new StringBuilder();
+        
+        for (int i = 1; i < 11; i++) {
+            for (int j = 1; j < 11; j++) {
+                int product = i*j;
+                sb.append(" ");
+                if (product < 10) {
+                    sb.append(" ");
+                } else if (product > 99) {
+                    sb.deleteCharAt(sb.length() - 1);
+                }
+                sb.append(product + " |");
+            }
+            sb.append("\n");
+        }
+        System.out.println(sb.toString());
+        return sb.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        
+        StringBuilder sb = new StringBuilder();
+        
+        for (int i = 1; i < tableSize + 1; i++) {
+            for (int j = 1; j < tableSize + 1; j++) {
+                int product = i*j;
+                sb.append(" ");
+                if (product < 10) {
+                    sb.append(" ");
+                } else if (product > 99) {
+                    sb.deleteCharAt(sb.length() - 1);
+                }
+                sb.append(product + " |");
+            }
+            sb.append("\n");
+        }
+        System.out.println(sb.toString());
+        return sb.toString();
     }
 }