arraylist

来源： https://stackoverflow.com/questions/47622723/find-all-indexes-of-x-in-arraylist

来源： https://stackoverflow.com/questions/47622723/find-all-indexes-of-x-in-arraylist

来源： https://stackoverflow.com/questions/47622723/find-all-indexes-of-x-in-arraylist

来源： https://stackoverflow.com/questions/47622723/find-all-indexes-of-x-in-arraylist

来源： https://stackoverflow.com/questions/51606628/how-can-i-call-second-largest-number-from-arraylist-using-collections

来源： https://stackoverflow.com/questions/51606628/how-can-i-call-second-largest-number-from-arraylist-using-collections

来源： https://stackoverflow.com/questions/63165992/xamarin-picker-not-showing-the-date-from-the-list

来源： https://stackoverflow.com/questions/62671598/how-to-sort-elements-of-arraylist-in-ascending-order-java

来源： https://stackoverflow.com/questions/63506426/remove-old-object-after-comparing-userid-and-date-from-list-android

问题 I am trying to write a procedure do the deep copy of List<List<Integer>> , and I am doing like this: public static List<List<Integer>> clone(final List<List<Integer>> src) { List<List<Integer>> dest = new ArrayList<List<Integer>>(); for( List<Integer> sublist : src) { List<Integer> temp = new ArrayList<Integer>(); for(Integer val: sublist) { temp.add(val); } dest.add(temp); } return dest ; } Is this a good way to do? Is it possible to get rid of the inner loop? The fact is that each of the