refactor 170

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_170.java

@@ -5,50 +5,52 @@
 import java.util.List;
 import java.util.Map;
 
-
 /**
  * 170. Two Sum III - Data structure design
- * <p>
- * Design and implement a _1 class. It should support the following operations: add and find.
- * <p>
+ *
+ * Design and implement a TwoSum class. It should support the following operations: add and find.
+ *
  * add - Add the number to an internal data structure.
  * find - Find if there exists any pair of numbers which sum is equal to the value.
- * <p>
- * For example,
+ *
+ * Example 1:
  * add(1); add(3); add(5);
  * find(4) -> true
  * find(7) -> false
+ *
+ * Example 2:
+ * add(3); add(1); add(2);
+ * find(3) -> true
+ * find(6) -> false
  */
 
-//Your _1 object will be instantiated and called as such:
-//_1 twoSum = new _1();
-//twoSum.add(number);
-//twoSum.find(value);
 public class _170 {
+  public static class Solution1 {
     private Map<Integer, Integer> map = new HashMap();
     private List<Integer> list = new ArrayList();
 
     // Add the number to an internal data structure.
     public void add(int number) {
-        list.add(number);
-        map.put(number, map.getOrDefault(number, 0) + 1);
+      list.add(number);
+      map.put(number, map.getOrDefault(number, 0) + 1);
     }
 
     // Find if there exists any pair of numbers which sum is equal to the value.
     public boolean find(int value) {
-        for (int i = 0; i < list.size(); i++) {
-            int val1 = list.get(i);
-            int val2 = value - val1;
-            if (map.containsKey(val2)) {
-                if (val1 == val2) {
-                    if (map.get(val2) > 1) {
-                        return true;
-                    }
-                } else {
-                    return true;
-                }
+      for (int i = 0; i < list.size(); i++) {
+        int val1 = list.get(i);
+        int val2 = value - val1;
+        if (map.containsKey(val2)) {
+          if (val1 == val2) {
+            if (map.get(val2) > 1) {
+              return true;
             }
+          } else {
+            return true;
+          }
         }
-        return false;
+      }
+      return false;
     }
+  }
 }