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35 lines
710 B
Python
35 lines
710 B
Python
def binarySearch(arr, l, r, x):
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while l <= r:
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mid = l + (r - l)//2;
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# Check if x is present at mid
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if arr[mid] == x:
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return mid
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# If x is greater, ignore left half
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elif arr[mid] < x:
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l = mid + 1
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# If x is smaller, ignore right half
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else:
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r = mid - 1
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# If we reach here, then the element
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# was not present
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return -1
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# Test array
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arr = [ 2, 3, 4, 10, 40 ]
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x = 10
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# Function call
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result = binarySearch(arr, 0, len(arr)-1, x)
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if result != -1:
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print ("Element is present at index ",result)
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else:
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print ("Element is not present in array")
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