Add two sum solution

Author: hyunjung-choi

two-sum/hyunjung-choi.kt

@@ -0,0 +1,16 @@
+class Solution {
+    fun twoSum(nums: IntArray, target: Int): IntArray {
+        val result = IntArray(2)
+
+        for (i in nums.indices) {
+            for (j in i + 1 until nums.size) {
+                if (nums[i] + nums[j] == target) {
+                    result[0] = i
+                    result[1] = j
+                }
+            }
+        }
+
+        return result
+    }
+}