题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;
void async function () {
// Write your code here
let str = await readline();
let charArr = str.split('');
let qcStr = '';
charArr.forEach(char=>{
if(qcStr.indexOf(char)== -1){
qcStr+=char;
}
});
console.log(qcStr.length);
}()
搜狐畅游公司福利 1284人发布