标签:arraylist java random android
自己写了一个,有时候会有需要。
public static <V> boolean isEmpty(ArrayList<V> sourceList) { return (sourceList == null || sourceList.size() == 0); }
/** * 打乱ArrayList * * */ public static <V> ArrayList<V> randomList(ArrayList<V> sourceList){ if (isEmpty(sourceList)) { return sourceList; } ArrayList<V> randomList = new ArrayList<V>( sourceList.size( ) ); do{ int randomIndex = Math.abs( new Random( ).nextInt( sourceList.size() ) ); randomList.add( sourceList.remove( randomIndex ) ); }while( sourceList.size( ) > 0 ); return randomList; }
java打乱ArrayList生成一个随机ArrayList列表
标签:arraylist java random android
原文地址:http://blog.csdn.net/ekeuy/article/details/39430101