题解 | #计算某字符出现次数#

const line1 = readline();
const line2 = readline();

function func(str, char) {
    let num = 0;
    
    const arr = str.split('');
    arr.forEach((item) => {
        if (item.toLowerCase() === char.toLowerCase()) num++;
    });
    return num;
}

print(func(line1, line2));