摘要:
https://leetcode.cn/problems/sqrtx/solution/x-de-ping-fang-gen-by-leetcode-solution/ //二分查找 某个数 func mySqrt(x int) int { l, r := 0, x ans := -1 for l 阅读全文
摘要:
https://leetcode.cn/problems/permutations/ var ans [][]int var vis map[int]bool func permute(nums []int) [][]int { path:=make([]int,0) ans=make([][]in 阅读全文