渔民
一个紧凑的模块，用于对数组进行随机排序。
例子
var shuffle = require ( 'fisher-yates' )
console . log ( shuffle ( [ 1 , 2 , 3 ] ) )
// => [3, 1, 2]
// supports custom rng returning [0, 1)
console . log ( shuffle ( [ 1 , 2 , 3 ] , Math . random ) )
// => [2, 3, 1]
要就地洗牌：
var shuffleInplace = require ( 'fisher-yates/inplace' )
var array = [ 1 , 2 , 3 ]
shuffleInplace ( array )
console . log ( array )
// => [2, 1, 3]
