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A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at
upside down).
Write a function to count the total strobogrammatic numbers that exist in the range of low
<= num <= high.
Example:
Input: low = "50", high = "100"
Output: 3
Explanation: 69, 88, and 96 are three strobogrammatic numbers.
Note:
Because the range might be a large number, the low and high numbers are
represented as string.
Difficulty:
Hard
Lock:
Prime
All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.