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sumalistas.java
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//'main' method must be in a class 'Rextester'. //Compiler version 1.8.0_111 import java.util.*; import java.lang.*; class Rextester { public static void main(String[] args) { List<Integer> sublista1 = new ArrayList<>(); sublista1.add(1); sublista1.add(2); sublista1.add(3); //suma 6 List<Integer> sublista2 = new ArrayList<>(); sublista2.add(2); sublista2.add(3); sublista2.add(4);//suma 9 List<List<Integer>> listadelistas = new ArrayList<>(); listadelistas.add(sublista1); listadelistas.add(sublista2); //imprimir resultado: 15 System.out.println(listOperator(listadelistas)); } public static int listOperator(List<List<Integer>> arr) { int suma = 0; for (List<Integer> list : arr) { for (Integer integer : list) { suma+=integer; } } return suma; } }
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Compilation time: 0.63 sec, absolute running time: 0.14 sec, cpu time: 0.13 sec, memory peak: 18 Mb, absolute service time: 0,78 sec
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