Merge pull request #2023 from Sol35229/main

[Sol35229] WEEK 01 solutions

Author: Sol35229

two-sum/Sol35229.java

@@ -0,0 +1,31 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class Sol35229 {
+
+    public int[] bruteForce(int[] nums, int target) {
+        for (int i = 0; i < nums.length; i++) {
+            for (int j = i+1; j < nums.length; j++) {
+                if (nums[i]+nums[j] == target) {
+                    return  new int[]{i, j};
+                }
+            }
+        }
+        return new int[] {};
+    }
+
+    public int[] hashTable(int[] nums, int target) {
+        Map<Integer, Integer> hashMap = new HashMap<>();
+        for (int i = 0; i < nums.length; i++) {
+            hashMap.put(nums[i], i);
+        }
+        for (int i = 0; i < nums.length; i++) {
+            int complement = target - nums[i];
+            if (hashMap.containsKey(complement) && hashMap.get(complement) != i) {
+                return new int[]{i, hashMap.get(complement)};
+            }
+        }
+        return new int[] {};
+    }
+}
+