1.能少for循环,就少
2.与for无关的变量的不进入for循环
刷题网址:
1.leetcode:
https://leetcode.cn/
https://leetcode-cn.com/
2.牛客网:
https://www.nowcoder.com/
1.能少for循环,就少
2.与for无关的变量的不进入for循环
刷题网址:
1.leetcode:
https://leetcode.cn/
https://leetcode-cn.com/
2.牛客网:
https://www.nowcoder.com/