船航行两点之间的距离-yiteyi-C++库

编写一个程序来确定船在静水中行驶的两点之间的距离（D），给定船在静水中的速度（B），水流的速度（S），划船和返回的时间，即T。

null

例如：

Input : B = 5, S = 1, T = 1Output : D = 2.4Input : B = 5, S = 2, T = 1 Output : D = 2.1

推荐：请尝试你的方法 {IDE} 首先，在进入解决方案之前。

距离的公式是D=T*（B^2–S^2）/（2*B）

这个公式是如何工作的？

Time taken when person goes upstream,    t1 = D/(B-S)Time taken when person goes downstream,   t2 = D/(B+S)We are given t1 + t2 = TSo, D/(B-S) + D/(B+S) = T   D = T*(B^2 - S^2)/ (2*B)

C++

                         // CPP program to find distance between                       
                         // two points using boat speed, stream                       
                         // speed and total time.                       
                         #include <iostream>                       
                         using                                     namespace                                     std;                       
           
                         // Function to calculate the distance                       
                         // between two points via boat                       
                         float                                     distance(                                     float                                     T,                                     float                                     B,                                     float                                     S)                       
                         {                       
                                                 return                                     (T * (((B * B) - (S * S)) / (2 * B)));                       
                         }                       
           
                         int                                     main()                       
                         {                       
                                                 // Time taken time taken to row a place                       
                                                 // and come back in hr                       
                                                 float                                     T = 1;                       
           
                                                 // Speed of boat in still water in km/hr                       
                                                 float                                     B = 5;                       
           
                                                 // Speed of stream in km/hr                       
                                                 float                                     S = 1;                       
                                                 cout <<                                     "The distance between two points via boat = "                       
                                                 << distance(T, B, S) <<                                     " km"                                     ;                       
                                                 return                                     0;                       
                         }                       

JAVA

                         // java program to find distance between                       
                         // two points using boat speed, stream                       
                         // speed and total time.                       
                         import                                     java.io.*;                       
           
                         class                                     GFG {                       
           
                                                 // Function to calculate the distance                       
                                                 // between two points via boat                       
                                                 static                                     float                                     distance(                                     float                                     T,                                     float                                     B,                                     float                                     S)                       
                                                 {                       
                                                 return                                     (T * (((B * B) - (S * S)) / (                                     2                                     * B)));                       
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     main (String[] args)                       
                                                 {                       
                                                 // Time taken time taken to row a place                       
                                                 // and come back in hr                       
                                                 float                                     T =                                     1                                     ;                       
                                   
                                                 // Speed of boat in still water in km/hr                       
                                                 float                                     B =                                     5                                     ;                       
                                   
                                                 // Speed of stream in km/hr                       
                                                 float                                     S =                                     1                                     ;                       
                                                 System.out.println(                                     "The distance between two points via boat = "                       
                                                 + distance(T, B, S) +                                     " km"                                     );                       
                                   
                                                 }                       
                         }                       
           
                         // This code is contributed by vt_m.                       

Python3

                         # Python 3 program to find distance                       
                         # between two points using boat speed,                       
                         # stream speed and total time.                       
           
                         # Function to calculate the distance                       
                         # between two points via boat                       
                         def                                     distance( T, B, S):                       
           
                                                 return                                     (T                                     *                                     (((B                                     *                                     B)                                     -                                     (S                                     *                                     S))                                     /                                     (                                     2                                     *                                     B)))                       
           
                         # Driver Code                       
                         if                                     __name__                                     =                                     =                                     "__main__"                                     :                       
                                   
                                                 # Time taken time taken to row                       
                                                 # a place and come back in hr                       
                                                 T                                     =                                     1                       
           
                                                 # Speed of boat in still                       
                                                 # water in km/hr                       
                                                 B                                     =                                     5                       
           
                                                 # Speed of stream in km/hr                       
                                                 S                                     =                                     1                       
                                                 print                                     (                                     "The distance between two "                                     +                       
                                                 "points via boat ="                                     ,                       
                                                 distance(T, B, S),                                     "km"                                     )                       
           
                         # This code is contributed                       
                         # by ChitraNayal                       

C#

                         // C# program to find distance between                       
                         // two points using boat speed, stream                       
                         // speed and total time.                       
                         using                                     System;                       
           
                         class                                     GFG {                       
           
                                                 // Function to calculate the distance                       
                                                 // between two points via boat                       
                                                 static                                     float                                     distance(                                     float                                     T,                                     float                                     B,                                     float                                     S)                       
                                                 {                       
                                                 return                                     (T * (((B * B) - (S * S)) / (2 * B)));                       
                                                 }                       
           
                                                 // Driver code                       
                                                 public                                     static                                     void                                     Main()                       
                                                 {                       
                                                 // Time taken time taken to row a place                       
                                                 // and come back in hr                       
                                                 float                                     T = 1;                       
           
                                                 // Speed of boat in still water in km/hr                       
                                                 float                                     B = 5;                       
           
                                                 // Speed of stream in km/hr                       
                                                 float                                     S = 1;                       
                                                 Console.WriteLine(                                     "The distance between two points via boat = "                                     +                       
                                                 distance(T, B, S) +                                     " km"                                     );                       
                                                 }                       
                         }                       
           
                         // This code is contributed by vt_m.                       

Javascript

                         <script>                       
           
                         // Javascript program to find distance                       
                         // between two points using boat speed,                       
                         // stream speed and total time.                       
                                   
                         // Function to calculate the speed                       
                         // of boat in still water                       
                         function                                     distance(T,B,S)                       
                         {                       
                                                 return                                     (T * (((B * B) - (S * S)) / (2 * B)));                       
                         }                       
                                   
                         // Driver Code                       
                         var                                     T = 1;                       
                         var                                     B = 5;                       
                         var                                     S = 1;                       
           
                         document.write(                                     "The distance between "                                     +                       
                                                 "two points via boat = "                                     +                       
                                                 distance(T, B, S) +                                     " km "                                     );                       
                                   
                         // This code is contributed by bunnyram19                       
           
                         </script>                       

输出：

The distance between two points via boat = 2.4 km

文章版权归作者所有，未经允许请勿转载。

THE END

技术文章