Data Structures Algorithms-II MCQs

Page No. 109

For which of the following pairs of strings is the edit distance maximum?


asunday & monday

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bmonday & tuesday

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ctuesday & wednesday

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dwednesday & thursday

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View Answer wednesday & thursday

What is the edit distance between the strings “abcd” and “acbd” when the allowed operations are insertion, deletion and substitution?


a1

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b2

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c3

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d4

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View Answer 2

Wagner–Fischer algorithm is used to find ____________


aLongest common subsequence

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bLongest increasing subsequence

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cEdit distance between two strings

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dLongest decreasing subsequence

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Wagner–Fischer is a ____________ algorithm.


aBrute force

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bGreedy

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cDynamic programming

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dRecursive

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View Answer Dynamic programming

Which of the following implementations of Catalan numbers has the largest space complexity(Don’t consider the stack space)?


aDynamic programming

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bBinomial coefficients

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cRecursion

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dAll have equal space complexities

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View Answer Dynamic programming

Which of the following implementations of Catalan numbers has the smallest time complexity?


aDynamic programming

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bBinomial coefficients

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cRecursion

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dAll have equal time complexity

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View Answer Binomial coefficients

Which of the following lines completes the above code?


a arr[i] = arr[j] * arr[k];

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barr[j] += arr[i] * arr[k];

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carr[i] += arr[j] * arr[k].

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darr[j] = arr[i] * arr[k];

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Which of the following methods can be used to find the nth Catalan number?


aRecursion

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bBinomial coefficients

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cDynamic programming

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dRecursion, Binomial Coefficients, Dynamic programming

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Which of the following is not an application of Catalan Numbers?


aCounting the number of Dyck words

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bCounting the number of expressions containing n pairs of parenthesis

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c Counting the number of ways in which a convex polygon can be cut into triangles by connecting vertices with straight lines

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dCreation of head and tail for a given number of tosses

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Which of the following numbers is the 6th Catalan number?


a14

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b429

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c132

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d42

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View Answer 42

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