题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
let str=readline()
function strLength(str,h=[]){
let arr=str.split('')
arr.forEach(v=>h[v]=(h[v]||0)+1)
return Object.keys(h).length
}
console.log(strLength(str))
#华为暑期实习合租##做项目##交流群##美团点评美团offer#
function strLength(str,h=[]){
let arr=str.split('')
arr.forEach(v=>h[v]=(h[v]||0)+1)
return Object.keys(h).length
}
console.log(strLength(str))
#华为暑期实习合租##做项目##交流群##美团点评美团offer#
