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我有一个字符串数组,我从网上拉任何颜色分类:Swift iOS - 如何按特定顺序排列数组?
var colors = ["red", "green", "yellow", "blue", "purple"]
,但它也可能出现如:
//this time less colors
var colors = ["yellow", "red", "purple"]
不管他们来这方式我想通过颜色的数组进行排序,并将其添加到一个新的数组,我希望新的阵列有这样的顺序:
//the way I want the new array to have it's elements
["red", "purple", "pink", "yellow", "brown", "blue", "orange", "green"]
我想:
var newArr:[String] = []
for color in colors{
if color == "red"{
newArr[0] = "red"
}
if color == "purple"{
newArr[1] = "purple"
}
if color == "pink"{
newArr[2] = "pink"
}
if color == "yellow"{
newArr[3] = "yellow"
}
if color == "brown"{
newArr[4] = "brown"
}
if color == "blue"{
newArr[5] = "blue"
}
if color == "orange"{
newArr[6] = "orange"
}
if color == "green"{
newArr[7] = "green"
}
}
我有一个例外:
fatal error: Index out of range
我知道我做的超出范围的错误,但我无法弄清楚如何得到它把它放在我想要的顺序。
如何循环访问颜色数组,并将其中的任何元素都按照我想要的顺序添加到新数组中?
感谢您的帮助!我会在15分钟后尝试并告诉你。 –
按照你平常的ass!!有用 :) –