题解 | #计算某字母出现次数#

const line = readline().toUpperCase()
const code = readline().toUpperCase()
function findNum() {
    let count = 0
    for(let i=0;i<line.length;i++) {
        if(line[i]===code) {
            count++
        }
    }
    return count
}
console.log(findNum())