C++ Exercises: Count the string 'aa' in a given string and assume 'aaa' contains two 'aa'

Last update on December 20 2024 12:28:06 (UTC/GMT +8 hours)

Count 'aa' in String

Write a C++ program to count the string "aa" in a given string and assume "aaa" contains two "aa".

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

// Function to count occurrences of "aa" pairs in the input string 's'
int test(string s)
{
    int ctr_aa = 0; // Counter to store the occurrences of "aa" pairs

    // Iterate through the string 's' to check for "aa" pairs
    for (int i = 0; i < s.length() - 1; i++)
    {
        // Check if the substring of length 2 starting at index 'i' is equal to "aa"
        if (s.substr(i, 2) == "aa")
        {
            ctr_aa++; // Increment the counter if "aa" is found
        }
    }

    return ctr_aa; // Return the count of "aa" pairs in the string 's'
}

// Main function
int main() 
{
    // Output the counts of "aa" pairs in different input strings
    cout << test("bbaaccaag") << endl;
    cout << test("jjkiaaasew") << endl;
    cout << test("JSaaakoiaa") << endl;

    return 0; // Return 0 to indicate successful execution of the program
}

Sample Output:

2
2
3

Visual Presentation:

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