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1067. Digit Count in Range

Given an integer d between 0 and 9, and two positive integers low and high as lower and upper bounds, respectively. Return the number of times that d occurs as a digit in all integers between low and high, including the bounds low and high.

 

Example 1:

Input: d = 1, low = 1, high = 13
Output: 6
Explanation: 
The digit d=1 occurs 6 times in 1,10,11,12,13. Note that the digit d=1 occurs twice in the number 11.

Example 2:

Input: d = 3, low = 100, high = 250
Output: 35
Explanation: 
The digit d=3 occurs 35 times in 103,113,123,130,131,...,238,239,243.

 

Note:

  1. 0 <= d <= 9
  2. 1 <= low <= high <= 2×10^8

Difficulty:

Hard

Lock:

Prime

Company:

Amazon

Problem Solution

1067-Digit-Count-in-Range

All Problems:

Link to All Problems
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.