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快学Scala 第三章 #4答案-12201918-51CTO博客
source link: http://blog.51cto.com/12211918/2066692
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4.给定一个整数数组，产生一个新的数组，包含原数组中的所有正值，按原有顺序排序之后的元素是所有的零或者负值，按原有顺序排序scala>valarr=Array(1,2,3,4,5,-1,6,0,-2,7,-3,8,-4,9,0,-5)arr:Array[Int]=Array(1,2,3,4,5,-1,6,0,-2,7,-3,8,-4,9,0,-5)scala>valap=arr.fil
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