Challenge: Filtering Numbers in a Loop
Task
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Find the sum of all numbers from 1 to n, excluding those that are divisible by 3 or 5.
- Create a method called
sumNotDivisibleBy3Or5(int n)that returns anint. - Inside this method, create a
forloop that iterates from 1 ton(inclusive). - In each iteration, check if the number is not divisible by 3 and not divisible by 5.
- If the number passes the condition, add it to a running total
sum. - Return the total
sumafter the loop ends.
Solution
solution
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package com.example;
public class Main {
public static int sumNotDivisibleBy3Or5(int n) {
int sum = 0;
for (int i = 1; i <= n; i++) {
if (i % 3 != 0 && i % 5 != 0) {
sum += i;
}
}
return sum;
}
public static void main(String[] args) {
int n = 15;
int sum = sumNotDivisibleBy3Or5(n);
System.out.println("The sum of numbers from 1 to " + n + " that are not divisible by 3 or 5 is: " + sum);
}
}
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Section 3. Chapter 8
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package com.example;
public class Main {
public static int sumNotDivisibleBy3Or5(int n) {
int sum = 0;
for (___) {
if (___) {
sum ___;
}
}
return sum;
}
public static void main(String[] args) {
int n = 15;
int sum = sumNotDivisibleBy3Or5(n);
System.out.println("The sum of numbers from 1 to " + n + " that are not divisible by 3 or 5 is: " + sum);
}
}
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