Question

In an effort to find something to do during self-quarantine, your friend flips a coin many times and carefully records the result of each flip in a character vector using either H or T. Write a function named greatestRun that receives this character array and then analyzes it to find the largest number of consecutive heads or tails. It must return two values: (1) the number corresponding to how many heads or tails were thrown in a row and (2) the character H or T depending upon whether it was Heads or Tails that was thrown the most times. In the event of a tie for the longest run, return the character B for both

Please solve the Heads-or-Tails problem in C or C++ using either Windows or Linux. Read the H-or-T data from
a below file or from STDIN. Report the result and related statistics to STDOUT. Report any errors to
STDERR:

File: HTHHTTTHHTHHHTHTHTHHHHHTTHHHHHHHHHHHHTTTTTTTTTH

Answer 1

• USING TOSS.TXT FILE FOR INPUTS.
• USING STRUCT finalAns to send output from greatestRun()
• Attempted in C++ using windows.

Code for the following question:-

#include <bits/stdc++.h>
using namespace std;
struct finalAns
{
std::string maxchar,count;
};
finalAns greatestRun(ifstream & point) //function asked in question
{char ch;
struct finalAns a;
char prev;
int maxH=0,maxT=0;
int count=0;

while (point>>ch) //reading characters from text file into char variable
{
if(count==0&&maxH==0&&maxT==0) //first character
{
prev=ch;
count++;
continue;
}
if(prev==ch)
count++;
else // check for maxH and maxT each time the value changes from H to or vice versa
{
if(prev=='H'&&count>maxH)
maxH=count;
if(prev=='T'&&count>maxT)
maxT=count;

count=1;
}   

prev=ch;   
}

if(prev=='H'&&count>maxH)
maxH=count;
if(prev=='T'&&count>maxT)
maxT=count;
//saving the final ans to struct variable a
  
std::string s ;
if(maxT>maxH) //T>H
{
a.maxchar='T';
s = std::to_string(maxT);
a.count=s;
}
else if(maxT<maxH) //H>T
{
a.maxchar='H';
s = std::to_string(maxH);
a.count=s;
}
else //draw
{
a.maxchar='B';
a.count='B';
}
return a;
}

int main()
{ ifstream point;
point.open("toss.txt");
struct finalAns x=greatestRun(point);
cout<<x.maxchar<<" "<<x.count;
return 0;
}
Screenshot of IDE:-

Screenshot of sample input file and output:-

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