题解 | #统计字符#

let line=readline().split('');
let letter=0;
let space=0;
let num=0;
let other=0;
line.map(item=>{
    if(/[a-zA-Z]/.test(item)){
        letter++
    }else if(/\s/.test(item)){
        space++
    }else if(/[0-9]/.test(item)){
        num++
    }else{
        other++
    }
})
console.log(letter)
console.log(space)
console.log(num)
console.log(other)