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20220330_Vote/Ewide.Web.Entry/wwwroot/lib/xe-utils/shuffle.js

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+var random = require('./random')
+
+var values = require('./values')
+
+/**
+  * 将一个数组随机打乱，返回一个新的数组
+  *
+  * @param {Array} array 数组
+  * @return {Array}
+  */
+function shuffle (array) {
+  var index
+  var result = []
+  var list = values(array)
+  var len = list.length - 1
+  for (; len >= 0; len--) {
+    index = len > 0 ? random(0, len) : 0
+    result.push(list[index])
+    list.splice(index, 1)
+  }
+  return result
+}
+
+module.exports = shuffle