JS38. 高频数据类型
描述
请补全JavaScript代码，要求找到参数数组中出现频次最高的数据类型，并且计算出出现的次数，要求以数组的形式返回。示例1
输入:
__findMostType([0,0,'',''])
输出:
['number','string',2]或['string','number',2]
HTML/CSS/JavaScript 解法, 执行用时: 1738ms, 内存消耗: 77884KB, 提交时间: 2022-01-25
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _findMostType = array => {\n // 补全代码\n //第一步：先用对象o保存数组里面的类型以及对应出现的频率，maxNum保存最大频率数\n let o={}\n let maxNum=0\n let arr=[]\n array.forEach(item=>{\n let type= item===null ? 'null' : (typeof item ==='function' ? 'object' : (typeof item))\n o[type]=o[type] ? o[type]+1 : 1\n maxNum=maxNum>o[type] ? maxNum : o[type]\n })\n //第二步：在o里面找到最高频率的对象存在arr里\n Object.keys(o).forEach(key=>{\n if(o[key]==maxNum){\n arr.push(key)\n }\n })\n arr.push(maxNum)\n return arr\n }\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1741ms, 内存消耗: 77772KB, 提交时间: 2021-12-20
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _findMostType = array => {\n // 补全代码\n let obj = {}\n let maxCnt = 0\n for (let item of array) {\n let type = typeof item\n if (!obj[type]) {obj[type] = 0}\n ++obj[type]\n if(obj[type]>maxCnt){maxCnt = obj[type]}\n }\n let res = []\n for(let key in obj){\n if(obj[key]==maxCnt){res.push(key)}\n }\n res.push(maxCnt)\n return res\n}\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1744ms, 内存消耗: 77760KB, 提交时间: 2021-12-07
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _findMostType = array => {\n // 补全代码\n let obj = {}\n let arr = []\n let num = 0\n for (item of array) {\n let type = typeof item\n if (obj[type]) obj[type]++\n else obj[type] = 1\n num = obj[type] > num ? obj[type] : num\n }\n for (key in obj) {\n arr = obj[key] === num ? [...arr, key] : arr\n }\n return [...arr, num]\n }\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1745ms, 内存消耗: 77840KB, 提交时间: 2022-01-25
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _findMostType = array => {\n // 补全代码\n let typeArr = []\n let AlltypeObject = []\n array.forEach(element=>{\n let objType={\n type:typeof element,\n count:1\n }\n if(typeArr.indexOf(typeof element) === -1){\n typeArr.push(typeof element)\n AlltypeObject.push(objType)\n }else{\n AlltypeObject.forEach(elementObject =>{\n if(elementObject.type == typeof element){\n elementObject.count++\n }\n })\n } \n })\n let maxCount = Math.max(...AlltypeObject.map(element=>{return element.count}));\n let maxArray = AlltypeObject.filter(element=>{return maxCount==element.count})\n return [...maxArray.map(element=>{return element.type}),maxCount] \n }\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1749ms, 内存消耗: 77772KB, 提交时间: 2022-01-05
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _findMostType = array => {\n // 补全代码\n let data={};let maxNum=0;let arr=[];\n for(let i=0;i<array.length;i++){\n var t=array[i]===null?'null':(typeof item==='function'?'object': (typeof array[i]))\n data[t]=data[t]?data[t]+1:1;\n maxNum=data[t]>maxNum?data[t]:maxNum;\n }\n for (let key of Object.keys(data)) \n {\n if(data[key]===maxNum){\n arr.push(key);\n }\n }\n arr.push(maxNum);\n return arr;\n }\n </script>\n </body>\n</html>","libs":[]}