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16楼 出现排序问题

@if(0)==(0) echo off & cscript.exe -NoLogo -E:JScript %0 <a.txt>b.txt & pause & exit @end
var arr = WScript.StdIn.ReadALL().match(/\d+-\d+/g);
var tmp = {};
for(var i = 0, len = arr.length; i < len; i++)  {
    if (!tmp.hasOwnProperty(arr[i])) {
        tmp[arr[i]] = 1
    }
    else { tmp[arr[i]]++ }
}
len = 0, arr = [];
for(var i in tmp) {arr.push([i,tmp[i]]) }
arr.sort().reverse();
for(var i =0,len = arr.length; i < len; i++)  {
    WScript.echo(arr[i].join('\t'))
}
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