一些面试的小题
public class SimpleQuestion { static boolean yesOrNo(String s) { s = s.toLowerCase(); if (s.equals("yes") || s.equals("y") || s.equals("t")) { s = "true"; } return Boolean.getBoolean(s); } public static void main(String[] args) { System.out.println(yesOrNo("true") + " " + yesOrNo("Yes")); }}import java.util.Arrays;import java.util.Collection;import java.util.HashSet;public class InstrumentedHashSet<E> extends HashSet<E> { private int addCount = 0; @Override public boolean add(E e){ addCount++; return super.add(e); } @Override public boolean addAll(Collection<? extends E> c){ addCount += c.size(); return super.addAll(c); } public static void main(String[] args) { InstrumentedHashSet<String> s = new InstrumentedHashSet<String>(); s.addAll(Arrays.asList("Accordion","Banjo","Kazoo")); System.out.println(s.addCount); }}问题：打印结果是什么？
import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.List;public class Searching { public static void main(String[] args) { String[] strings = { "0", "1", "2", "3", "4", "5"}; List<Integer> integers = new ArrayList<Integer>(); for(String s : strings){ integers.add(Integer.valueOf(s)); } System.out.println(Collections.binarySearch(integers, 1,cmp)); } static Comparator<Integer> cmp = new Comparator<Integer>(){ public int compare(Integer i,Integer j){ return i<j?-1:(i==j?0:1); } };}问题：打印结果是什么？
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