题解 | #计算某字母出现次数#
计算某字母出现次数
http://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
const str = readline()
const chart = readline()
function getChartLen(str, chart) {
if(!str || chart === null || chart === undefined){
return 0
}
let strLen = str.length
let len = 0
str = str.toLowerCase()
chart = chart.toLowerCase()
for(let i = 0; i < strLen; i++) {
if(str[i] === chart) {
len++
}
}
return len
}
console.log(getChartLen(str, chart))