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Searching & Sorting Questions

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A sorting algorithm which can prove to be a best time algorithm in one case and a worst time algorithm in worst case is


AQuick Sort

BHeap Sort

CMerge Sort

DInsert Sort

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
278
Solv. Corr.
143
Solv. In. Corr.
421
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Which is true for binary search ?


ADivide and conquer algorithm

BTraversal scheme

CGreedy algorithm

Dnone of these

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
193
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Solv. In. Corr.
368
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What data structures you should use for dictionary searching and it should be capable of doing spell check also?


ATree

BArray

CQueue

DHashing

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
116
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Selection sort and quicksort both fall into the same category of sorting algorithms. What is this category?


AO(n log n) sorts

BDivide-and-conquer sorts

CInterchange sorts

DAverage time is quadratic

Answer: Option C

Explanation:

Selection sort is not O(n log n) and not a Divide-conquer sort too and Average time of quicksort is not quadratic.

Workspace

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SHSTTON
277
Solv. Corr.
291
Solv. In. Corr.
568
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Which one of the following statements about the function Process Array is CORRECT?

Consider the C function given below. Assume the array listA contains (n>0) elements, sorted in ascending order.

int Process array (int * list A, int x, int n)
{
int i, j, k;
i =0;j=n-1;
do {
k = (i+j)/2;
if (x<=list A[k])
j=k-1;
if (list A[k] <=x)
i =k+1;
} while (i <=j);
if (list A[k] == x)
return (k);
else
return -1;
}


AIt will run into an infinite loop when x is not in listA

BIt is an implementation of binary search.

CIt will always find the maximum element in listA.

DIt will return -1 even when x is present in listA.

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
395
Solv. Corr.
131
Solv. In. Corr.
526
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0 M:3 S
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Choose the correct option.

What data structures you should use for dictionary searching and it should be capable of doing spell check also ?


Aarray

BHashing

Clinked list

DTree

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
182
Solv. Corr.
182
Solv. In. Corr.
364
Attempted
0 M:2 S
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7 / 55

Choose the correct option.

The searching technique that takes O (1) time to find a data is


ALinear Search

BBinary Search

CHashing

DTree Search

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
199
Solv. Corr.
150
Solv. In. Corr.
349
Attempted
0 M:14 S
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8 / 55

Choose the correct option.

The number of interchanges required to sort 5, 1, 6, 2 4 in ascending order using Bubble Sort is


A6

B7

C5

D8

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
189
Solv. Corr.
133
Solv. In. Corr.
322
Attempted
0 M:4 S
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Choose the correct option.

Merging 4 sorted files containing 50, 10, 25 and 15 records will take____time


AO(100)

BO(200)

CO(175)

DO(125)

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
181
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159
Solv. In. Corr.
340
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0 M:8 S
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Choose the correct option.

Quick sort is also known as


Amerge sort

Bheap sort

Cbubble sort

DNone of these

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

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