Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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![画像:In this code snippet that performs a binary search, what code should replace the placeholders expression and statement? int binarysearch(int a[], int n, int value) { } int beg; int end; int mid; beg = 0; end = n - 1; mid= (beg + end) / 2; while (beg <= end && a [mid] != value) { if (expression) { end = mid - 1; } else { beg = mid + 1; } statement } if (beg> end) { return -1; } else { return mid; } expression: value < a [mid] statement: mid = (beg) / 2; expression: value> a [mid] statement: mid = (beg + end) / 2; expression: value < a [mid] statement: mid = (beg + end) / 2; expression: value = a [mid] statement: mid = (beg + end) / 2;](https://content.bartleby.com/qna-images/question/115bc08a-05f9-46c8-bfbd-3937dbcb6bf8/6ca264dc-71a6-404d-9e0f-76c6f5aca17d/abj7nog_thumbnail.jpeg){kind=link}
Transcribed Image Text:In this code snippet that performs a binary search, what code should replace the
placeholders expression and statement?
int binarysearch(int a[], int n, int value)
{
}
int beg;
int end;
int mid;
beg = 0;
end = n - 1;
mid= (beg + end) / 2;
while (beg <= end && a [mid] != value)
{
if (expression) { end = mid - 1; }
else { beg = mid + 1; }
statement
}
if (beg> end) { return -1; }
else { return mid; }
expression: value < a [mid]
statement: mid = (beg) / 2;
expression: value> a [mid]
statement: mid = (beg + end) / 2;
expression: value < a [mid]
statement: mid = (beg + end) / 2;
expression: value = a [mid]
statement: mid = (beg + end) / 2;
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