Exam 98-388 topic 1 question 27 discussion

Actual exam question from Microsoft's 98-388

Question #: 27
Topic #: 1

HOTSPOT -
You work as an intern Java programmer at Adventure Works. Your team lead asks you to create a method.
The method must meet the following requirements:
✑ Accept an int array
✑ Check for duplicate values in the array
✑ Stop the outer loop as soon as a duplicate value has been detected and return true
✑ Return false if all values in the array are unique
How should you complete the code? To answer, select the appropriate code segments in the answer area.
NOTE: Each correct selection is worth one point.
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References:
https://stackoverflow.com/questions/3951547/java-array-finding-duplicates

by mtmoore at Aug. 24, 2020, 7:13 a.m.

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BiDzej

Highly Voted 4 years, 8 months ago

int x = 0; x < array.length - 1; //x has to be max one before last element as y in next loop is x+1 and we are targeting element at index y, else there would be out of index exception y++ break;

upvoted 10 times

Abhitera

4 years, 4 months ago

Correct

upvoted 1 times

Walkie

3 years, 1 month ago

Shouldn't it be x<= array.length-1 so that the last element in the array can be accessed?

upvoted 1 times

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mtmoore

Highly Voted 4 years, 9 months ago

The third part should be y++.

upvoted 8 times

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lulzosad

Most Recent 3 years, 12 months ago

boolean isDuplicate = false; for(int x = 0; x <= array.length - 1; x++) { for(int y = x + 1; y < array.length; y++) if(array[x] == array[y]) isDuplicate = true; if(isDuplicate) break; } return isDuplicate;

upvoted 2 times

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