Github链接

TDD作业划分

1.分单词
2.分组
3.排序
4.多个空格

Frequency number 的最终代码

![
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var format = function (words)
{
   return words ;
}
function main(words)
{
   var t,s;
   var i,string='',string2,count = 0;
   var str = new Array();
   var str2 = new Array();
   var num = new Array();
   str = words.split(/\s+/);
   str2[0] = str[0];
   for (i=0 ;i<str.length ; i++) {
       if (str[i] !== str2[count]) {
           count++;
           str2[count] = str[i];
       }
   }
   for (i=0 ;i<str2.length ; i++) {
       var h = 0;
       for (j = 0; j < str.length; j++) {
           if (str2[i] === str[j]) {
               h++;
           }
       }
       num[i] = h;
   }

   for (i=0 ;i<num.length-1 ; i++) {
       for (j=i+1 ;j<num.length ; j++) {
           if(num[i]>num[j])
           {
               t=num[i];
               num[i]=num[j];
               num[j]=t;
               s=str2[i];
               str2[i]=str2[j];
               str2[j]=s;
           }
       }
   }
   for (i=0 ;i<str2.length ; i++) {

       if(i < str2.length-1 ) {
           string2 = str2[i] +' '+ num[i] + '\r\n';
       }
       else
       {
           string2 = str2[i] +' '+ num[i];
       }
       string += string2;
   }
   return format(string );
}
module.exports = main;