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class BinarySearch { | |
int binarySearch(int arr[], int x) { | |
int l = 0, r = arr.length - 1; | |
while (l <= r) { | |
int m = l + (r - l) / 2; | |
//x değeri ortanca değer mi kontrol et | |
if (arr[m] == x) | |
return m; | |
// x ortanca değerden büyükse, sol yarıyı görmezden gelir | |
if (arr[m] < x) | |
l = m + 1; | |
// x ortanca değerden küçükse, sağ yarıyı görmezden gelir | |
else | |
r = m - 1; | |
} | |
// x değeri dizide bulunamadıysa -1 değerini döner | |
return -1; | |
} | |
public static void main(String args[]) { | |
BinarySearch search = new BinarySearch(); | |
int arr[] = { 1, 3, 5, 7, 9 }; | |
int n = arr.length; | |
int x = 7; | |
int result = search.binarySearch(arr, x); | |
if (result == -1) | |
System.out.println("Element not present"); | |
else | |
System.out.println("Element found at " | |
+ "index " + result); | |
} | |
} |
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