Apex Use Case 16 | Chapter 75 | Salesforce Developer Masterclass

Write a method that returns the sum of all numbers (till a specific number)

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[virajmhaiskar]

public static Integer useCase16(Integer num) {
Integer answer = 0;
if(num != 0) {
answer = num * (num + 1)/2;
}
return answer;
}

[sameershaik]

public with sharing class ApexUseCase16 {
//A method that returns the sum of all numbers
public static Integer enterANumber)
{
integer sumOfNumbers = 0;
if(enterAnumber != null){
for(integer i =0; i<=enterANumber; i++){
sumOfNumbers = sumOfNumbers + i;
}
}
return sumOfNumbers;
}

}