题目 我的代码 import datetime ipt = input() begin = datetime.datetime(int(ipt[0:4]), int(ipt[4:6]), int(ipt[6:8])) flag1=0 flag2=0 while True:  if flag1==1 and flag2==1:    brea...

class Solution:    def myPow(self, x: float, n: int) -> float:        if n==0:            return 1        if n==1:            return x        if n==-1:  ...

递归法： class Solution:    def isPowerOfTwo(self, n: int) -> bool:        if n==1:            return True        if n<=0 or n%2!=0:            return Fals...

#include<iostream> using namespace std; int fib(int n){ if (n<2){ return n; } return fib(n-1) + fib(n-2); } int main(){ int n; cin >> n; cout << fib(n); return 0; } 数...

#include<stdio.h> int main(){ int n; scanf('%d',&n); int a[n][n]; int top=0,down=n-1,left=0,right=n-1,count=1; while(count<=n*n){ for (int i=left;i<=right;i++){ a[top]...

#include<iostream> using namespace std; int main(){ int num; cin >> num; while(num>9){ int total=0; while(num!=0){ total+=num%10; num/=10; } num = total; total = 0; } cout <&...