英语翻译
These positive integers:3748,67,869,32435465768 are all wiggle numbers because if you examine the digits of each number they go up,down,up,down,...or down,up,down,up,down,up,...For example:
3 < 7 > 4 < 8 and 3 > 2 < 4 > 3 < 5 > 4 < 6 > 5 < 7 > 6 < 8
A single digit is a wiggle number of length 1.
Write a program that will determine how many of the initial digits of a number form a wiggle number.The answer could,of course,be the length of the number in some cases.