can anyone help me

Question about the task

Under discussion

how to declare return I'm not getting

Write a function that computes the minimum of four numbers.
The function min(a, b, c, d) should use (call) the function min(a, b)

Hint:
You need to write the body of the two existing min functions.

Requirements:

The program should display text on the screen.
The min methods should not display text on the screen.
The main method should call min(a, b) and min(a, b, c, d).
The main method should display the result of the min methods. Each time, on a new line.
The min(a, b) method must return the minimum of the numbers a and b.
The min(a, b, c, d) method must use the min(a, b) method.
The min(a, b, c, d) method must return the minimum of the numbers a, b, c, and d.

package com.codegym.task.task02.task0217; /* Minimum of four numbers */ public class Solution { public static int min(int a, int b, int c, int d) { int m; if(a<=b && a<=c && a<=d) m = a; else if(b<=a && b<=c && b<=d) m = b; else if(c<=a && c<=b && c<=d) m = c; else m = d; return m; } public static int min(int a, int b) { int m1; if(a<=b) m1 = a; else if(b<=a) m1 = b; return m1; } public static void main(String[] args) throws Exception { System.out.println(min(-20, -10)); System.out.println(min(-20, -10, -30, -40)); System.out.println(min(-20, -10, -30, 40)); System.out.println(min(-40, -10, -30, 40)); } }

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Pedros Balandinos

Level 6 , lusaka, Zambia

14 May 2020, 12:21

i got ya Your loop staments which is called"if" and "else if" statments are correct .. but far from done they all need need to use the return integers that is less then the other.you also need to call your min(a,b) statment in the min(a, b, c ,d) the return also applies

example:

 if(a<b)
{
return a;
}

Barnali Bhowmik

Level 4 , Golaghat, India

13 May 2020, 17:22

You need to first find minumum of two numbers (i.e. min(int a, int b) ) and using this method you can find minimum of four numbers . And you can use return statement as shown in below code

public static int min(int a, int b, int c, int d) {
        int m1 = min(a,b);
        int m2 = min(c,d);
        return min(m1,m2);
    }

    public static int min(int a, int b) {
        if(a<b)
            return a;
        else
            return b;
    }

Belinda

Level 4 , Portland, United States

13 May 2020, 11:06

I started out similar to you putting everything in the min(int a, int b, int c, int d) I noticed I was repeating code in both min methods. I deleted the a, b from the four argument method and put it in the two argument method. I also made my "smallest" variable a ... public static int smallest; I typed it under class so it could be seen by all methods.... Put the min(a,b) inside the min(a,b,c,d) method to do the a, b comparison on the mins with four arguments. I just put return smallest; on both methods and adjusted the comparisons as needed.

AlfredW

Level 23 , Denver, United States

12 May 2020, 13:24

The first method needs to call the second method.

Usha Mathivanan

Level 15 , CHENNAI, India

12 May 2020, 12:24

What is the error you get when you run? I think you have to initialize int m and int m1 like int m = 0; int m1 = 0;

Ashish RajAnand

Level 13 , Bhilai , India

12 May 2020, 12:33

yes you are right . He doesn't use if else statement . In the condition there is no need to check equal . and The min(a, b, c, d) method must use the min(a, b) method.