2 files changed, 39 insertions, 0 deletions
diff --git a/1/go.mod b/1/go.mod
new file mode 100644
index 0000000..2d5a4a6
--- /dev/null
+++ b/1/go.mod
@@ -0,0 +1,3 @@
+module 1
+
+go 1.18
diff --git a/1/main.go b/1/main.go
new file mode 100644
index 0000000..598041e
--- /dev/null
+++ b/1/main.go
@@ -0,0 +1,36 @@
+package main
+
+import "fmt"
+
+func twoSum(nums []int, target int) []int {
+	dict := make(map[int][]int, len(nums))
+	for i := 0; i < len(nums); i++ {
+		dict[nums[i]] = append(dict[nums[i]], i)
+	}
+	// fmt.Println(dict)
+
+	if target%2 == 0 {
+		if _, ok := dict[target/2]; ok {
+			// fmt.Println(len(dict[target/2]))
+			if len(dict[target/2]) >= 2 {
+				// fmt.Println("one")
+				return []int{dict[target/2][0], dict[target/2][1]}
+			}
+		}
+	}
+	for key, val := range dict {
+		if _, ok := dict[target-key]; ok {
+			if val[0] != dict[target-key][0] {
+				return []int{val[0], dict[target-key][0]}
+			}
+		}
+	}
+
+	return []int{100, 100}
+}
+
+func main() {
+	fmt.Println(twoSum([]int{2, 7, 11, 15}, 9))
+	fmt.Println(twoSum([]int{3, 2, 4}, 6))
+	fmt.Println(twoSum([]int{3, 3}, 6))
+}