题目描述
Given a range of numbers starting with integer L and ending at R, the task is to count the numbers which have same first and last digits.
Example 1:
Input:
L = 7
R = 68
Output:
9
Explanation:
Number with the same
first and last digits
in the given range is:
[7, 8, 9, 11, 22, 33,
44 ,55, 66].
Example 2:
Input:
L = 5
R = 40
Output:
8
Explanation:
Number with the same
first and last digits
in the given range is:
[5, 6, 7, 8, 9, 11,
22, 33, 44].
Your Task:
You don't need to read input or print anything. Your task is to complete the function numbersInRange() which takes integers L and R and returns the count of numbers if L>R return 0.
Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)
Constraints:
1 <= L,R <= 10^{8}
输入格式
见题面
输出格式
见题面