Alternating Parity Check

Easy

You are given an integer array values. Check whether even and odd numbers alternate in it, meaning every two adjacent elements have different parity. Return True if they do and False otherwise. A single-element array counts as alternating.

Example 1

values=[7, 10, 3, 4] → True

Odd, even, odd, even: neighbours always differ in parity.

Example 2

values=[2, 5, 9] → False

5 and 9 are neighbours and both odd.

Example 3

values=[42] → True

There are no neighbours, so nothing can break the rule.

Constraints

1 ≤ len(values) ≤ 100
1 ≤ values[i] ≤ 100

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Topics

Array

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Input

values=[7, 10, 3, 4]

Expected

True

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