问题描述:
一天中时针和分针共相遇多少次?
方法一:
这道题可以转换为中学时学的追及问题,分针走得快,时针走得慢,分针要想追到时针必须要比时针多走360度。分针一分钟走360/60=6度,时针一分钟走360/(12 * 60)=0.5度。那么,分针比时针多走360度需要的时间为360/(6-0.5),所以在一天之中时针和分针的相遇次数为24*60/(360/(6-0.5))=22次。
方法二:
当然我们也可以运用编程的方法来解决这道问题
#include <algorithm> #include <iostream> #include <vector> using namespace std; struct HMS { int hour; int minute; int second; HMS(int h = 0, int m = 0, int s = 0) : hour(h), minute(m), second(s) {} }; HMS secToHour(int s) { int h = s / 3600; s %= 3600; int m = s / 60; s %= 60; return HMS(h, m, s); } void meetTime(vector<int>& mt) { double vs = 1.0; double vm = 1.0 / 60; double vh = 1.0 / (60 * 12); for (int i = 1; i < 12; ++i) mt.push_back(i * 60.0 / (vm - vh)); }
#include <stdio.h> #include "Tick.h" int main() { vector<int> mt; meetTime(mt); HMS hms; for (int i = 0; i < mt.size(); ++i) { hms = secToHour(mt[i]); cout << mt[i] << " - " << hms.hour << ":" << hms.minute << ":" << hms.second << endl; } cout << endl; system("pause"); return 0; }
运行结果:
原文:https://www.cnblogs.com/h-hkai/p/14639736.html