Created
April 17, 2011 22:47
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Exemplo de como gerar uma lista que contem a soma dos pares em outra lista em Java
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| import java.util.Iterator; | |
| import java.util.List; | |
| import java.util.ArrayList; | |
| public class SomaPares { | |
| public static List<Integer> somapares(List<Integer[]> pares) | |
| { | |
| List<Integer> result = null; | |
| if (pares != null) | |
| { | |
| result = new ArrayList<Integer>(); | |
| for (Integer[] par : pares) | |
| { | |
| if (par.length != 2) | |
| throw new IllegalArgumentException("Lista contem elemento que não é um par."); | |
| result.add(par[0] + par[1]); | |
| } | |
| } | |
| return result; | |
| } | |
| public static void main(String[] args) | |
| { | |
| ArrayList<Integer[]> pares = new ArrayList<Integer[]>(); | |
| pares.add(new Integer[] {1, 5}); | |
| pares.add(new Integer[] {4, 7}); | |
| List<Integer> soma = SomaPares.somapares(pares); | |
| System.out.print("["); | |
| int c = 0; | |
| for (Integer i : soma) | |
| { | |
| if (c != 0) | |
| System.out.print(", "); | |
| c++; | |
| System.out.print("" + i); | |
| } | |
| System.out.print("]"); | |
| } | |
| } |
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