The function should return True if: the 1st and 2nd elements differ by 1, and the 2nd and 3rd elements differ by 2, and the 3rd and 4th element differ by 3, and

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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please help me write the code def zoom I'm not understanding (picture).  Please we can't use use dictionaries, sets, 'break'.
or import a library or other module

def zoom (L):
''(list of int) -> bool
Preconditions: len (L)> = 2
Definition: Two numbers x and y differ by d if:
x-y = d or y-x = d (it doesn't matter which of x and y is greater).
The function should return True if:
the 1st and 2nd elements differ by 1, and
the 2nd and 3rd elements differ by 2, and
the 3rd and 4th element differ by 3, and
(n-1) and n th elements differ by (n-1)
Otherwise the function returns False.
For example, for the list [4,5,3,0, -4] the function must return True
since 4 and 5 differ by 1; and, 5 and 3 differ by 2; and, 3 and 0 differ by 3;
and O and -4 differ by 4.
For example for list [4,5, -7] the function must return False
since 4 and 5 differ by 1; but 5 and -7 differ by 12 (it must be 2)
If possible: make the code efficient using a while loop with
Boolean variable to exit the while loop as soon as the result is known.
You can use python's abs () function for absolute value.
>>> zoom ([4,5,3,0, -4])
True
>>> zoom ([4,5, -7])
False
>>> zoom ([9,10,12,15,19,24,30])
True
>>> zoom ([9,10,12,15,19,24,31])
False
Transcribed Image Text:def zoom (L): ''(list of int) -> bool Preconditions: len (L)> = 2 Definition: Two numbers x and y differ by d if: x-y = d or y-x = d (it doesn't matter which of x and y is greater). The function should return True if: the 1st and 2nd elements differ by 1, and the 2nd and 3rd elements differ by 2, and the 3rd and 4th element differ by 3, and (n-1) and n th elements differ by (n-1) Otherwise the function returns False. For example, for the list [4,5,3,0, -4] the function must return True since 4 and 5 differ by 1; and, 5 and 3 differ by 2; and, 3 and 0 differ by 3; and O and -4 differ by 4. For example for list [4,5, -7] the function must return False since 4 and 5 differ by 1; but 5 and -7 differ by 12 (it must be 2) If possible: make the code efficient using a while loop with Boolean variable to exit the while loop as soon as the result is known. You can use python's abs () function for absolute value. >>> zoom ([4,5,3,0, -4]) True >>> zoom ([4,5, -7]) False >>> zoom ([9,10,12,15,19,24,30]) True >>> zoom ([9,10,12,15,19,24,31]) False
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