JS Programming Little Practice 2の Cattle

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function Dnastr (s) {  //ps: No AC, see bug Please indicate    if (s.length>=1&&s.length<=50) {        var rege=/^[a-z] +$/g;        if (Rege.exec (s)) {            var reg=/[atcg]{1,4}/g;            var tmp= s.match (reg);            var lens=[];            var max=0;            for (var key in tmp) {                lens.push (tmp[key].length);            }            for (var key in lens) {                if (Lens[key] > max) {                    max = Lens[key];                }            }            return Max;}}    } var s= "Tarcat" Console.log (DNASTR (s));

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function Issame (str) {  //determines if the string    var begin = 0    var end = Str.length/2 while    (End < Str.length && Str[begin] = = Str[end]) {        begin++        end++    }    if (end = = Str.length  ) {        return true    }    return false}function  isostring (str) {  //after removing several characters from the end, determine whether or not a string of    var max = 0    if (str.length <= 1) {        return str.length    }    while (Str.length >=2) {        str = str.slice (0,str.length-2)        if (Issame (str)) {  //calls the even-string judgment method            return Str.length        }    }    return 0}console.log (isostring ("Abaababaab"))

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PS: See the bug to help point out, Xie

JS Programming Little Practice 2の Cattle