JavaScript中基数排序详解

//LSD Radix Sort  
var counter = [];function radixSort(arr, maxDigit) {  
    var mod = 10;  
    var dev = 1;  
    for (var i = 0; i < maxDigit; i++, dev *= 10, mod *= 10) {  
        for(var j = 0; j < arr.length; j++) {  
            var bucket = parseInt((arr[j] % mod) / dev);  
            if(counter[bucket]==null) {  
                counter[bucket] = [];  
            }  
            counter[bucket].push(arr[j]);  
        }  
        var pos = 0;  
        for(var j = 0; j < counter.length; j++) {  
            var value = null;  
            if(counter[j]!=null) {  
                while ((value = counter[j].shift()) != null) {  
                      arr[pos++] = value;  
                }  
          }  
        }  
    }  
    return arr;}