Question

Your team was asked to program a self-driving car that reaches its destination with minimum travel time.

Write an algorithm for this car to choose from two possible road trips. You will calculate the travel time of each trip based on the car current speed and the distance to the target destination. Assume that both distances and car speed are given.

Answer 1

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If there will be same speed for both routes then we are not required to calculate time because the route which have less distance will be chosen automatically.

Algorithm:

1. START
2. Declare 4 double variables firstDistance,secondDistance,firstSpeed,secondSpeed.
3. Input the 4 numbers, firstDistance,secondDistance,firstSpeed,secondSpeed respectively.
4. Declare 2 double variables firstTime,secondTime.
5. Divide firstDistance by firstSpeed and store in firstTime similarly Divide secondDistance by secondSpeed and store in secondTime
6. If firstTime is less than secondTime then goto step 7 else goto step 8
7. Print the value of variable firstTime and message "Choose Route first" and goto step 9
8. Print the value of variable secondTime and message "Choose Route second"
9. END

I am also writing the program for better understanding.

Program in C++

I have written comments for better understanding.

#include <iostream>

using namespace std;

int main()
{
    //Declare 4 double variables firstDistance,secondDistance,firstSpeed,secondSpeed
   double firstDistance,secondDistance,firstSpeed,secondSpeed;
   //Input the 4 numbers, firstDistance,secondDistance,firstSpeed,secondSpeed respectively
   cin>>firstDistance>>secondDistance>>firstSpeed>>secondSpeed;
   //Declare 2 double variables firstTime,secondTime
   double firstTime,secondTime;
   //Divide firstDistance by firstSpeed and store in firstTime
   firstTime=firstDistance/firstSpeed;
   //Divide secondDistance by secondSpeed and store in secondTime
   secondTime=secondDistance/secondSpeed;
   //If firstTime is less than secondTime then 
   if(firstTime<secondTime)
   {
       cout<<"Time Taken by first route is:"<<firstTime<<" So Choose Route first";
   }
   //otherwise
   else
   {
       cout<<"Time Taken by second route is:"<<secondTime<<" So Choose Route second";
   }
    return 0;
}

Output:

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