I have passed the first two test cases in my exercise, but the other three ones gives error.

Question

I have passed the first two test cases in my exercise, but the other three ones gives error and I can't see why they giving error because they are locked. And anybody couldn't solve that. The community section of that exercise is empty.Please help me with this issue I don't want the full solution.

20. CODE PROJECT

You take a loan from a friend and need to calculate how much you will owe him after 3 months.
You are going to pay him back 10% of the remaining loan amount each month.
Create a program that takes the loan amount as input, calculates and outputs the remaining amount after 3 months.

Sample Input:
20000

Sample Output:
10628

Here is the monthly payment schedule:
Month 1
Payment: 10% of 20000 = 2000
Remaining amount: 18000
Month 2
Payment: 10% of 18000 = 1800
Remaining amount: 16200
Month 3:
Payment: 10% of 16200 = 1620
Remaining amount: 14580

Answer 1

You may find some hints if you searched the forum for similar questions, many had asked questions around this challenge.

Answer 2

Well you can make it a bit simpler
Considering that the payment is 10%
So the remaining amount would be 90% right?
So you can say
import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int amount = scanner.nextInt();
//your code goes here
int remain;
for(int x=3;x>0;x--)
{

amount*=0.9;
// System.out.println(amount);
}
System.out.println(amount);
}
}
try it and if there is still an error i will retry

Answer 3

It worked thank you :) I never have tried to look from that side :)

Answer 4

Your welcome good luck :)

Answer 5

You can i will try to explain it as well as i can

When one value is an int and the other is a double, Java creates a new temporary value that is the double version of the int value

So java supports mixing differnt types of operands as long as they are from the same category i mean int double short long etc

You can read about it here for wider understanding

https://www.cs.umd.edu/~clin/MoreJava/Intro/expr-mixed.html

Answer 6

the test cases are hidden so that you can think of a way to improve your code and understand where an error may happen
If you can add your code so that we can find a way to improve it or to guess what test case may cause the fail

Answer 7

You can also write
*90/100 here you are dealing with int without the need for java to change the operand to a double
that is what i know ,you may find a flow in my knowledge though

Answer 8

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int amount = scanner.nextInt();
//your code goes here
int remain;
for(int x=3;x>0;x--)
{
remain=amount/100*10;
amount=amount-remain;
// System.out.println(amount);
}
System.out.println(amount);
}
}

My code is here. Please help me.

Answer 9

I will ask another thing: we multiply the amount with 0.9 its okay. But the variable type of amount is int and 0.9 is double am i wrong ? How the IDE can multiply int with double variable type ?

Answer 10

Thank you it helped a lot