Question

Public static void longestStreak(String str) {

// Initialize variables to store the current character and its count
char currentChar = '\0'; // Initialize with a placeholder character
int currentCount = 0;

// Initialize variables to store the longest streak character and its count
char longestChar = '\0'; // Initialize with a placeholder character
int longestCount = 0;

// Iterate through the characters in the string
for (int i = 0; i < str.length(); i++) {
char c = str.charAt(i);

// If the current character is the same as the previous character, increment the count
if (c == currentChar) {
currentCount++;
} else {
// If the current streak is longer than the longest streak, update the longest streak
if (currentCount > longestCount) {
longestChar = currentChar;
longestCount = currentCount;
}

// Reset the current character and its count
currentChar = c;
currentCount = 1;
}
}

// Check if the last streak is longer than the longest streak
if (currentCount > longestCount) {
longestChar = currentChar;
longestCount = currentCount;
}
// Print the result
System.out.println(longestChar + " " + longestCount);
}
What is the purpose of the longestStreak method?
a) To count the total number of characters in a string.
b) To find the longest substring of consecutive identical characters in a string.
c) To reverse the characters in a string.
d) To check if a string is a palindrome.

Answer 1

The longestStreak method is designed to determine and print the character that appears consecutively the most number of times in a string, along with the length of that streak.

Step-by-step explanation:

The purpose of the longestStreak method is to find the longest substring of consecutive identical characters within the provided string. It iterates through each character of the string, keeping track of the current streak of identical characters. If the streak ends (when the next character is different), it checks if the streak was the longest one so far. If it was, it updates the longest streak details. After iterating through all characters, the method prints the character that had the longest consecutive appearance and the length of that streak.