Leetcode Problem 2180. Count Integers With Even Digit Sum

2180. Count Integers With Even Digit Sum

Leetcode Solutions

Iterative Digit Sum Calculation

  1. Initialize a counter to 0.
  2. Loop through all numbers from 1 to num (inclusive).
  3. For each number, calculate the sum of its digits. a. Initialize the digit sum to 0. b. While the number is greater than 0, take the last digit by finding the remainder when divided by 10, add it to the digit sum, and remove the last digit by dividing the number by 10.
  4. After calculating the digit sum, check if it is even. a. If the digit sum is even, increment the counter.
  5. Return the counter value after the loop ends.
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Direct Even Digit Check

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