Practice Count Integers With Even Digit Sum
Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.
Problem Statement
Given a positive integer num, return the number of positive integers less than or equal to num whose digit sums are even. The digit sum of a positive integer is the sum of all its digits.
Source: Count Integers With Even Digit Sum on LeetCode. Use the original task for its coding environment and submissions.
Examples
# Example 1
Input
num = 4
Output
2
# Example 2
Input
num = 30
Output
14
Constraints
1 <= num <= 1000
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