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QuickSort.js
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50 lines (43 loc) · 1.33 KB
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/**
* Created by mm on 2016/1/12.
*/
exports.quickSortArray = function(array,dir) {
dir = dir || 'asc';
if (array.length == 0) {
return [];
}
var left = new Array();
var right = new Array();
var pivot = array[0];
if (dir == 'asc') {
for (var i = 1 ; i < array.length ; i++) {
array[i] < pivot ? left.push(array[i]) : right.push(array[i]);
}
} else{
for (var i = 1 ; i < array.length ; i++) {
array[i] > pivot ? left.push(array[i]) : right.push(array[i]);
}
}
return this.quickSortArray(left, dir).concat(pivot, this.quickSortArray(right, dir));
};
exports.quickSortObj = function(array,key,dir) {
dir = dir || 'asc';
key = key || 'id';
if(array.length == 0) {
return [];
}
var left = new Array();
var right = new Array();
var pivot = array[0][key];
var pivotObj = array[0];
if (dir == 'asc') {
for (var i = 1; i < array.length ; i++) {
array[i][key] < pivot ? left.push(array[i]) : right.push(array[i]);
}
} else {
for (var i = 1; i < array.length ; i ++) {
array[i][key] > pivot ? left.push(array[i]) : right.push(array[i]);
}
}
return this.quickSortObj(left, key, dir).concat(pivotObj, this.quickSortObj(right, key, dir));
};