Create twosum.java

Author: mustankap

Leetcode/Hashmap/twosum.java

@@ -0,0 +1,26 @@
+import java.util.*;
+
+public class Solution {
+    public int[] twoSum(int[] nums, int target) {
+        
+        HashMap<String, Integer> numbers = new HashMap<String, Integer>();
+        
+        for(int i=0; i<nums.length;i++) {
+            numbers.put(Integer.toString(nums[i]),i);   
+        }
+        
+        for(int i=0, place=i; i<nums.length;i++) {    
+            
+            int distance = target - nums[i];
+            
+            if (numbers.containsKey(Integer.toString(distance))) {
+                place = numbers.get(Integer.toString(distance));
+                if (i!=place){
+                    return new int[]{i,place};
+                }  
+            }
+        }
+        
+        return new int[]{0,0};
+    }
+}