Recap - Iterating Over Data

Part of the Fundamentals section of Coddy's PHP journey. Lesson 53 of 71.

Challenge

Easy

Read three lines of input:

A comma-separated list of integers (e.g., 12,5,8,20,3,15,7)
A minimum threshold value
A maximum threshold value

Process the array to find the sum of all numbers that fall within the range (inclusive of both minimum and maximum). First check if a number is exactly double the maximum threshold and, if so, stop immediately with break. Otherwise, use continue to skip numbers outside the range.

The first line is read with explode, so $numbers holds strings while $min and $max are integers. Convert each element with intval() (or a (int) cast) before you compare it with the thresholds or add it to the sum.

Print two lines:

The sum of valid numbers within the range
The count of numbers that were added to the sum

Example 1:

If the inputs are 5,12,8,20,15,3,10, 5, and 15, the output should be:

50
5

(5 + 12 + 8 + 15 + 10 = 50, five numbers are within range 5-15)

Example 2:

If the inputs are 2,8,12,20,6,14, 5, and 10, the output should be:

8
1

(Processing stops at 20 because it's double the max of 10; only 8 was added before that point, so the sum is 8 and the count is 1)

Example 3:

If the inputs are 1,2,3,4,5, 10, and 20, the output should be:

0
0

(No numbers fall within the range 10-20)

Try it yourself

<?php
// Read input
$numbers = explode(',', trim(fgets(STDIN)));
$min = intval(trim(fgets(STDIN)));
$max = intval(trim(fgets(STDIN)));

// Initialize variables
$sum = 0;
$count = 0;

// TODO: Write your code here
// Loop through the numbers array
// Use 'continue' to skip numbers outside the range (min to max inclusive)
// Use 'break' if you encounter a number exactly double the maximum threshold
// Keep track of the sum and count of valid numbers


// Output the results
echo $sum . "\n";
echo $count;
?>

All lessons in Fundamentals

2Variables and Data Types

Numbers Strings and Quotes Booleans Naming Conventions Recap - Variable Init Empty Variables String Concatenation Getting User Input Cast to Different Types

5Conditional Logic

If Statement If - Else The Ternary Operator Null Coalescing Operator Switch Statement Recap - Making Decisions

8Loops

For Loop While Loop Foreach Loop Looping with Keys and Values Break Statement Continue StatementRecap - Iterating Over Data

11Final Challenges

Challenge - Factorial Calc Challenge - Longest Word Challenge - Vowel Counter

Practice on your own: Online PHP compiler