单选题Given: ArrayList a = new ArrayList(); containing the values {“1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”} Which code will return 2?()A Collections. sort(a, a.reverse()); int result = Collections.binarySearch(a, “6”);B Comparator c = Collections.reverseOrder(); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”);C Comparator c = Collections.reverseOrder(); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”,c);D Comparator c = Collections.reverseOrder(a); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”,c);E Comparator c = new InverseComparator(new Comparator()); Collections.sort(a); int result = Collections.binarySearch(a, “6”,c);
单选题
Given: ArrayList a = new ArrayList(); containing the values {“1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”} Which code will return 2?()
A
Collections. sort(a, a.reverse()); int result = Collections.binarySearch(a, “6”);
B
Comparator c = Collections.reverseOrder(); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”);
C
Comparator c = Collections.reverseOrder(); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”,c);
D
Comparator c = Collections.reverseOrder(a); Collections.sort(a, c); int result = Collections.binarySearch(a, “6”,c);
E
Comparator c = new InverseComparator(new Comparator()); Collections.sort(a); int result = Collections.binarySearch(a, “6”,c);
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