Question 51 : Which class in Java can be used to represent bit array?
1. BitSet
2. BitVector
3. BitArray
4. BitStream
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Question 52 : What are the advantages of parallel arrays over the traditional arrays?
1. When a language does not support records, parallel arrays can be used
2. Increased locality of reference
3. Ideal cache behavior
4. All of the mentioned
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Question 53 : If row-major order is used, how is the following matrix stored in memory?
a b c
d e f
g h i
1. ihgfedcba
2. abcdefghi
3. cfibehadg
4. adgbehcfi
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Question 54 : Matrix A when multiplied with Matrix C gives the Identity matrix I, what is C?
1. Identity matrix
2. Inverse of A
3. Square of A
4. Transpose of A
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Question 55 : Which of the following is the correct syntax to declare an ArrayList in Java?
1. ArrayList al = new ArrayList();
2. ArrayList al = new ArrayList[];
3. ArrayList al() = new ArrayList();
4. ArrayList al[] = new ArrayList[];
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Question 56 : What is the worst case time complexity of inserting an element into the sorted array?
1. O(nlogn)
2. O(logn)
3. O(n)
4. O(n²)
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