Challenge: Sum of numbers

Part of the Fundamentals section of Coddy's Dart journey — lesson 93 of 94.

Challenge

Easy

In this challenge, you'll create a function that calculates the sum of numbers in a list based on certain conditions.

You have a list of integers, and you need to complete the sumWithCondition function that adds up only the numbers that meet specific criteria.

The function should:

Calculate the sum of all numbers in the list that are greater than the threshold value
Stop adding numbers immediately after the sum exceeds the maxSum value (the final sum may be greater than maxSum)
Return the final sum

Important: The function stops adding numbers after adding a number that causes the sum to exceed maxSum. This means the final result can be greater than maxSum.

Example: If numbers greater than threshold are [15, 20, 25, 30] and maxSum is 50:

Add 15: sum = 15 (continue)
Add 20: sum = 35 (continue)
Add 25: sum = 60 (exceeds 50, so stop here)
Result: 60 (not 50)

Try it yourself

void main() {
  // Test cases
  List<int> numbers = [5, 10, 15, 20, 25, 30];
  
  // Sum numbers greater than 12, with max sum of 50
  int result = sumWithCondition(numbers, 12, 50);
  print('Sum of numbers > 12 (max 50): $result');
  
  // Sum numbers greater than 8, with max sum of 100
  result = sumWithCondition(numbers, 8, 100);
  print('Sum of numbers > 8 (max 100): $result');
}

// TODO: Complete this function to sum numbers based on conditions
int sumWithCondition(List<int> numbers, int threshold, int maxSum) {
  int sum = 0;
  
  // TODO: Loop through the numbers list
  // TODO: Add only numbers greater than threshold to sum
  // TODO: Stop adding if sum exceeds maxSum
  
  return sum;
}