function strMaxItem(str) {
let countArr = []
let strArr = str.split('')
strArr.forEach(item => {
let obj = countArr.filter(obj => {
return item === obj['key']
})[0]
if (obj) {
obj['count']++
} else {
obj = {
key: item,
count: 1
}
countArr.push(obj)
}
});
let maxCount = 0
let maxObjArr = []
countArr.forEach(item => {
if (item['count'] > maxCount) {
maxCount = item['count']
maxObjArr.splice(0, maxObjArr.length)
maxObjArr.push(item)
} else if (item['count'] === maxCount) {
maxObjArr.push(item)
}
})
return maxObjArr
}
strMaxItem查找字符串中出现频率最高的字母
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转载自www.cnblogs.com/qq3279338858/p/9236366.html
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