?? ex3.java
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/* * To change this template, choose Tools | Templates * and open the template in the editor. */package chenchao1;import java.util.*;public class Ex3 { private static final int MAX_PRIMES = 1000; int[] primes = new int[MAX_PRIMES]; int[] maxTen = new int[10]; private void getMaxTen() { this.getPrimes(); Arrays.sort(primes); for (int i = 0; i < 10; i++) { maxTen[i] = primes[primes.length - i - 1]; //System.out.println(maxTen[i]); } } public int sum() { this.getMaxTen(); int result = 0; for (int i : maxTen) { result += i; } return result; } private void getPrimes() { int count = 0; for (int i = 3; count < MAX_PRIMES; i++) { boolean prime = true; for (int j = 0; j < count; j++) { if (i % primes[j] == 0) { prime = false; break; } } if (prime) { if (i > MAX_PRIMES) { break; } primes[count++] = i; //System.out.println("Found prime: " + i); } } } public static void main(String[] args) { Ex3 ex3 = new Ex3(); System.out.println(ex3.sum()); for (int i : ex3.maxTen) { System.out.println(i); } }}
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