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add: binarysearch-c #54

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Oct 13, 2022
Merged

add: binarysearch-c #54

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18 changes: 16 additions & 2 deletions C/binarysearch.c
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Original file line number Diff line number Diff line change
@@ -1,11 +1,25 @@
// Binary Search Algorithm in C++

#include <stdio.h>
#include <math.h>

int BinarySearch(int *arr, int size, int x)
{
// your code goes here
// return the index of the element if found else return -1
int l = 0;
int r = size - 1;
int m;
while (l <= r)
{
m = floor((l + r) / 2);
if (arr[m] < x) {
l = m + 1;
} else if (arr[m] > x) {
r = m - 1;
} else {
return m;
}
}
return -1;
}

int main()
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