A.Tea
B.Coffee
C.CoffeeTea
D.Compilationfails.
E.Thecoderunswithnooutput.
F.Anexceptionisthrownatruntime.
第1题
A.Collections.reverseSort(list,newMyComparator());
B.Collections.sort(list,newMyComparator());list.reverse();
C.Collections.sort(list,newInverseComparator(newMyComparator()));
D.Collections.sort(list,Collections.reverseOrder(newMyComparator()));
第2题
A.ListmyList=myArray.asList();
B.ListmyList=Arrays.asList(myArray);
C.ListmyList=newArrayList(myArray);
D.ListmyList=Collections.fromArray(myArray);
第3题
publicstaticvoidsearch(Listlist){list.clear();list.add(”b”);list.add(”a”);list.add(”c”);System.out.println(Collections.binarySearch(list,a”));}WhatistheresultofcallingsearchwithavalidListimplementation?()
A.0
B.1
C.a
D.b
E.c
F.Theresultisundefined.
第4题
importjava.util.*;publicclassLetterASort{publicstaticvoidmain(String[]args){ArrayListstrings=newArrayList();strings.add(?aAaA”);strings.add(”AaA”);strings.add(?aAa”);strings.add(”AAaa”);Collections.sort(strings);for(Strings:strings){System.out.print(s+);}}}Whatistheresult?()
A.Compilationfails.
B.aAaAaAaAAaaAaA
C.AAaaAaAaAaaAaA
D.AaAAAaaaAaAaAa
E.aAaAaAaAaAAAaa
F.Anexceptionisthrownatruntime.
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