Tip Calculator

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You are working on an app to calculate tips. Given 2 ints: a, for the purchase amount in cents, and b, for the quality of service received, can you calculate the tip in cents? Round the answer down to the nearest cent. Calculate the tip according to the following table:

Quality	Percent	decimal
1	5%	0.05
2	10%	0.1
3	15%	0.15
4	20%	0.2
5	25%	0.25

Example Input/Output
Given an input of 1000 3, return 150.

Explanation
There was a rating of 3 which according to the above table means you should give a tip of 15%.

1000 * 0.15 = 150.

Java Casting Types

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Note: One way to solve this problem would be to use a double for the tip percentage, but you will need to convert your product to an int for the answer. To assign a double to an int, you need to "cast" it by explicitly stating the type conversion. This is done by stating (int) before the double value. For example:

double num = 32.678;
int i = (int) num; // i = 32
double pi = 3.14159265
int roundPie = (int) pi; // roundPie = 3

Challenge

Calculate the tip as above and return an int of the tip in cents (rounded down).

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Comments

Matt
Nov 18, 1:28 AM

Completed, but won't check off.
Кирилл Варивода
Jan 5, 1:20 PM

Ha, I was just using this formula working only with int values:
x = (1000*15)/100
David
Mar 2, 8:39 PM

Just gotta say that thanks for including quotes, it keeps me somewhat interested and inspired at the same time while going through this awesome noob training. Pura vida!

isnard

Mar 10, 12:37 PM

int[] ar = {0,5,10,15,20,25};
    return (a * ar[b])/100;

Shena
Jan 2, 8:43 AM

ahahaha :D i don't understand the instructions????
hmpff guess so ... i couldn't figure out why those are the outputs ... -.-
can someone explain the instructions ? hehehe :)
Shena
Jan 2, 8:46 AM

ahhhh okey got it myself ehehe :D anyways thanks :)
Bernard Mitchell
Jun 1, 12:31 PM

double f= b*.05; // .05, .1, .15, .2, .25
double c= a*f;
return (int)c;
thales
Jul 15, 10:47 AM

If you just use doubles instead of integers then integers become doubles.
example 5/2=2 but 5/2.0=2.5

my code
Islam Elzohary
Dec 22, 12:49 PM

I don't understand the proplem!!!
Karina Nihalani
Mar 11, 4:45 PM

I don't understand the problem.
Learneroo
Mar 12, 12:12 PM

You just need to calculate the tip according to the given table. The tip should be a percentage of the the total purchase. I added an example to make it clearer.

Anand Ani

Mar 15, 11:23 AM

easy peoples
import java.util.Scanner;

public class Main {

static int doStuff(int a, int b){

    switch(b)
    {
        case 1:
            return (int)(a*0.05);

cont...

            case 2:
            return (int)(a*0.1);

            case 3:
            return (int)(a*0.15);

            case 4:
            return (int)(a*0.2);

            default:
            return (int)(a*0.25);

            }

}


//boilerplate code
public static void main(String[] args) {
    Scanner in = new Scanner(System.in);

    int n = in.nextInt();
    for(int i=0; i<n; i++){
        int a = in.nextInt();
        int b= in.nextInt();
        System.out.println(doStuff(a, b));
    }
}

}

Hanlise
May 14, 11:12 AM

def do_stuff(a, b):
output=int()

thisdict={
1:0.05,
2:0.1,
3:0.15,
4:0.2,
5:0.25

}

output += thisdict.get(b)

x=a*output
return x
my answer using python
Dheeraj Parmar
Aug 4, 12:46 PM

#include

using namespace std;

int func(int a , int b){
```
return a*(b*0.05);
```
}
int main()
{

int a,b;
cin>>a; // no of purchase amount:
cin>>b; // the quality of service recieved:
cout<<func(a,b);

}
AMR
Aug 9, 12:26 PM

Using Python - Do you guys think this code is too long and messy?

price_of_meal = float(input("How much did your meal cost: "))
quality_of_service = int(input("Rate the quality of service based from 1 to 5: "))
cont...
while quality_of_service < 1 or quality_of_service > 5:
if quality_of_service < 1:
print("Too low")

elif quality_of_service > 5: print("Too high") quality_of_service = int(input("Rate the quality of service based from 1 to 5: "))

if quality_of_service == 1:
print(round(price_of_meal * 0.05, 2))

elif quality_of_service == 2:
print(round(price_of_meal * 0.1, 2))

elif quality_of_service == 3:
print(round(price_of_meal * 0.15))

elif quality_of_service == 4:
print(round(price_of_meal * 0.2))

elif quality_of_service == 5:
print(round(price_of_meal * 0.25))
Roger
Aug 16, 12:07 PM

const service = {
1: 0.05,
2: 0.1,
3: 0.15,
4: 0.2,
5: 0.25,
}

function qualityOfService(a, b) {
let tip = a * service[b]
return tip
};
Roger
Aug 16, 1:39 PM

const service = {
1: 0.05,
2: 0.1,
3: 0.15,
4: 0.2,
5: 0.25,
}

function qualityOfService(a, b) {
let tip = a * service[b]
return tip += a
}
console.log(qualityOfService(10, 3).toFixed(2))