what to do in case of negative number in data.how would it check negative.?

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what to do in case of package com.codegym.task.task07.task0701; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* Maximum in an array */ public class Solution { public static void main(String[] args) throws Exception { int[] array = initializeArray(); int max = max(array); System.out.println(max); } public static int[] initializeArray() throws IOException { // Create and populate the arraya int[] a=new int[20]; BufferedReader b=new BufferedReader(new InputStreamReader(System.in)); for(int i=0;i<a.length;i++){ a[i]=Integer.parseInt(b.readLine()); } return a; } public static int max(int[] array) { int maxe=0; for(int i=0;i<array.length;i++) { for(int j=1;j<array.length;j++){ if(array[0]<array[j]) maxe=array[j]; }

package com.codegym.task.task07.task0701; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* Maximum in an array */ public class Solution { public static void main(String[] args) throws Exception { int[] array = initializeArray(); int max = max(array); System.out.println(max); } public static int[] initializeArray() throws IOException { // Create and populate the arraya int[] a=new int[20]; BufferedReader b=new BufferedReader(new InputStreamReader(System.in)); for(int i=0;i<a.length;i++){ a[i]=Integer.parseInt(b.readLine()); } return a; } public static int max(int[] array) { // Find the maximum // array=Integer.MAX_VALUE; // int maxi=array[0]; // int max=array[1]; int maxe=0; for(int i=0;i<array.length;i++) { for(int j=1;j<array.length;j++){ if(array[0]<array[j]) maxe=array[j]; } } return maxe; } }

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J H U X

Level 7 , Alkmaar, Netherlands

27 January 2021, 11:48

You set int maxe = 0. Make it int maxe = Integer.MIN_VALUE. When would you ever use Integer.MIN_VALUE or Integer.MAX_VALUE? They are handy if you want to initialize a variable to the smallest possible value and then search a sequence of values for a larger value. If you set initial value to 0, the problem will not know how to handle if all input is negative. Second for loop is not necessary if you use: public static int max(int[] array) { int maximum = Integer.MIN_VALUE; for (int i = 0; i < array.length; i++) { if (array[i] > maximum) { maximum = array[i]; } }return maximum; } Good luck!

Pavlo Plynko Java Developer at CodeGym

7 April 2020, 15:19

Could you explain this line:

int maxe=0;

In general, with negative numbers you need to do the same as with positive numbers, you do not need to handle them differently.

Attila

Level 25

30 March 2020, 19:04

int[] a=new int[20];
BufferedReader b=new BufferedReader(new InputStreamReader(System.in));
for(int i=0;i<a.length;i++){
    int x = Integer.parseInt(b.readLine());
    if (x >= 0){
        a[i] = x;
    }else{
        // Here you do with the negative number what you want.
    }
}

I.A

Level 7 , unknown city, Oman

7 April 2020, 10:52

if all would be negative