Data Structures Algorithms-II MCQs

Page No. 51

What is the range of rand()?


a0 to RAND_MAX

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b 0 to infinity

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c0 to 2147483647

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d0 to 32767

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View Answer 0 to RAND_MAX

What is the purpose of using function srand()?


ato set the seed of rand() function

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bto generate random numbers

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cto enable rand() function

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dto improve efficiency of rand()

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What should be the return type of rand() function?


aint

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bfloat

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clong

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ddouble

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View Answer int

What is pseudo random number generator?


aan algorithm that generates random numbers with help of mathematical formula

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ban algorithm that generates random numbers according to user activity

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can algorithm that generates random numbers according to time

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dan algorithm that generates random numbers with help of user input

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. What will be the output of the code that generates permutations and also has the ability to handle duplicates, for the input str[]=”AA”?


aAA

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bAA,AA

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c A,A

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d A

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View Answer AA

What is the time complexity of Heap’s algorithm?


aO(n log n)

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b O(n2)

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cO(n*n!)

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dO(n!)

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View Answer O(n!)

Heap’s algorithm requires an auxiliary array to create permutations.


a true

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bfalse

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cA & B

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dNone of these

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View Answer false

What will be the lexicographical order of permutations formed from the array arr={1,2,3}?


a {{2,1,3},{3,2,1},{3,1,2},{2,3,1},{1,2,3},{1,3,2}}

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b{{1,2,3},{1,3,2},{2,3,1},{2,1,3},{3,2,1},{3,1,2}}

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c{{1,2,3},{1,3,2},{2,1,3},{2,3,1},{3,1,2},{3,2,1}}

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d{{2,1,3},{3,1,2},{3,2,1},{2,3,1},{1,2,3},{1,3,2}}

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How many permutations will be formed from the array arr={1,2,3}?


a2

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b4

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c6

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d8

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View Answer 6

The dictionary ordering of elements is known as?


aLexicographical order

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bColexicographical order

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cWell order

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dSorting

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View Answer Lexicographical order

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