How to Solve Number of Beautiful Integers in the Range Problem
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Number of Beautiful Integers in the Range
You are given positive integers low, high, and k. A number is beautiful if it meets both of the following conditions: The count of even digits in the number is equal to the count of odd digits. The nu...
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Understanding the Number of Beautiful Integers in the Range Problem
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Problem Statement
You are given positive integers low, high, and k. A number is beautiful if it meets both of the following conditions: The count of even digits in the number is equal to the count of odd digits. The number is divisible by k. Return the number of beautiful integers in the range [low, high].
Number of Beautiful Integers in the Range
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Examples
low = 10, high = 20, k = 32There are 2 beautiful integers in the given range: [12,18]. - 12 is beautiful because it contains 1 odd digit and 1 even digit, and is divisible by k = 3. - 18 is beautiful because it contains 1 odd digit and 1 even digit, and is divisible by k = 3. Additionally we can see that: - 16 is not beautiful because it is not divisible by k = 3. - 15 is not beautiful because it does not contain equal counts even and odd digits. It can be shown that there are only 2 beautiful integers in the given range.
low = 1, high = 10, k = 11There is 1 beautiful integer in the given range: [10]. - 10 is beautiful because it contains 1 odd digit and 1 even digit, and is divisible by k = 1. It can be shown that there is only 1 beautiful integer in the given range.
low = 5, high = 5, k = 20There are 0 beautiful integers in the given range. - 5 is not beautiful because it is not divisible by k = 2 and it does not contain equal even and odd digits.
Constraints
0 < low <= high <= 1090 < k <= 20How Interview Coder Helps with Leetcode Problems
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