Как найти символ с наивысшей частотой в строке

// C++ program to find the character
// having the highest frequency in a string
#include 
#include 
#define ASCII_SIZE 256
using namespace std;

char maxFrequencyChar(const string &str)
{
    // Массив для частоты каждого символа, инициализирован нулями
    int frequency[ASCII_SIZE] = {0};

    int maxFrequency = -1;
    char maxFrequencyChar = '\0';

    // Один проход по строке: считаем и сразу обновляем максимум
    for (char c : str)
    {
        unsigned char uc = static_cast(c);
        frequency[uc]++;
        if (maxFrequency < frequency[uc])
        {
            maxFrequency = frequency[uc];
            maxFrequencyChar = c;
        }
    }

    return maxFrequencyChar;
}

int main()
{
    string str1 = "Which witch is which?";
    cout << "str1: " << str1 << endl;
    cout << "The highest frequency character is: " << maxFrequencyChar(str1) << endl;

    string str2 = "He threw three free throws";
    cout << "str2: " << str2 << endl;
    cout << "The highest frequency character is: " << maxFrequencyChar(str2) << endl;

    string str3 = "Eddie edited it";
    cout << "str3: " << str3 << endl;
    cout << "The highest frequency character is: " << maxFrequencyChar(str3) << endl;

    string str4 = "Makeuseof";
    cout << "str4: " << str4 << endl;
    cout << "The highest frequency character is: " << maxFrequencyChar(str4) << endl;

    string str5 = "She sees cheese";
    cout << "str5: " << str5 << endl;
    cout << "The highest frequency character is: " << maxFrequencyChar(str5) << endl;

    return 0;
}

str1: Which witch is which?
The highest frequency character is: h
str2: He threw three free throws
The highest frequency character is: e
str3: Eddie edited it
The highest frequency character is: d
str4: Makeuseof
The highest frequency character is: e
str5: She sees cheese
The highest frequency character is: e

# Python program to find the character
# having the highest frequency in a string
ASCII_SIZE = 256

def maxFrequencyChar(s):
    # Массив частот для ASCII
    frequency = [0] * ASCII_SIZE

    maxFrequency = -1
    maxFrequencyChar = ''

    # Считаем частоты
    for ch in s:
        frequency[ord(ch)] += 1

    # Находим первый символ с максимальной частотой
    for ch in s:
        if maxFrequency < frequency[ord(ch)]:
            maxFrequency = frequency[ord(ch)]
            maxFrequencyChar = ch

    return maxFrequencyChar

# Примеры
if __name__ == '__main__':
    examples = [
        "Which witch is which?",
        "He threw three free throws",
        "Eddie edited it",
        "Makeuseof",
        "She sees cheese"
    ]

    for s in examples:
        print("str:", s)
        print("The highest frequency character is:", maxFrequencyChar(s))

// C program to find the character
// having the highest frequency in a string
#include 
#include 
#define ASCII_SIZE 256

char maxFrequencyChar(char *str)
{
    int frequency[ASCII_SIZE] = {0};
    int lenOfStr = strlen(str);
    int maxFrequency = 0;
    char maxFrequencyChar = '\0';

    for (int i = 0; i < lenOfStr; i++)
    {
        unsigned char uc = (unsigned char)str[i];
        frequency[uc]++;
        if (maxFrequency < frequency[uc])
        {
            maxFrequency = frequency[uc];
            maxFrequencyChar = str[i];
        }
    }

    return maxFrequencyChar;
}

int main()
{
    char str1[] = "Which witch is which?";
    printf("str1: %s\n", str1);
    printf("The highest frequency character is: %c\n", maxFrequencyChar(str1));

    char str2[] = "He threw three free throws";
    printf("str2: %s\n", str2);
    printf("The highest frequency character is: %c\n", maxFrequencyChar(str2));

    char str3[] = "Eddie edited it";
    printf("str3: %s\n", str3);
    printf("The highest frequency character is: %c\n", maxFrequencyChar(str3));

    char str4[] = "Makeuseof";
    printf("str4: %s\n", str4);
    printf("The highest frequency character is: %c\n", maxFrequencyChar(str4));

    char str5[] = "She sees cheese";
    printf("str5: %s\n", str5);
    printf("The highest frequency character is: %c\n", maxFrequencyChar(str5));

    return 0;
}

// JavaScript program to find the character
// having the highest frequency in a string
function maxFrequencyChar(str) {
  const ASCII_SIZE = 256;
  const frequency = new Array(ASCII_SIZE).fill(0);

  let maxFrequency = -1;
  let maxFrequencyChar = '';

  for (let i = 0; i < str.length; i++) {
    const code = str.charCodeAt(i);
    frequency[code] += 1;
    if (maxFrequency < frequency[code]) {
      maxFrequency = frequency[code];
      maxFrequencyChar = str[i];
    }
  }

  return maxFrequencyChar;
}

// Примеры
const examples = [
  "Which witch is which?",
  "He threw three free throws",
  "Eddie edited it",
  "Makeuseof",
  "She sees cheese"
];

examples.forEach(s => {
  console.log('str:', s);
  console.log('The highest frequency character is:', maxFrequencyChar(s));
});