u

2026-07-02 16:37:27 +08:00
parent 8f176c1836
commit 4850991edd
2 changed files with 78 additions and 0 deletions
@@ -0,0 +1,34 @@
+package top100liked
+
+import (
+	"fmt"
+	"testing"
+)
+
+// https://leetcode.cn/problems/subsets/?envType=study-plan-v2&envId=top-100-liked
+
+func subsets(nums []int) [][]int {
+	res := [][]int{{}}
+	var helper func(nums []int, length int, start int, r []int)
+	helper = func(nums []int, length int, start int, r []int) {
+		if len(r) == length {
+			cp := make([]int, length)
+			copy(cp, r)
+			res = append(res, cp)
+			return
+		}
+		for i := start; i < len(nums); i++ {
+			r = append(r, nums[i])
+			helper(nums, length, i+1, r)
+			r = r[:len(r)-1]
+		}
+	}
+	for i := range len(nums) {
+		helper(nums, i+1, 0, []int{})
+	}
+	return res
+}
+
+func Test(t *testing.T) {
+	fmt.Printf("%+v", subsets([]int{1, 2, 3}))
+}