i want to find the span of a array. Span is defined as difference of maximum value and minimum value [closed]

I tried by creating two functions for greatest and smallest values and then subtracting them .but the code doesn’t seem to work here’s the code.See if u could help me out .im new to java and still learning.

```    import java.io.*;
import java.util.*;

public class Main{

public static void smler(int arr[],int j){
for (int i=0;i<=j;j++){
if(arr[i]<arr[i+1]){
int temp =arr[i];
arr[i]=arr[i+1];
arr[i+1]=temp;
}
}
}
public static void grter(int arr[],int j){
for (int i=0;i<=j;j++){
if(arr[i]>arr[i+1]){
int temp =arr[i];
arr[i]=arr[i+1];
arr[i+1]=temp;
}
}
}
public static void main(String[] args) throws Exception {
Scanner sc= new Scanner (System.in);
int n=sc.nextInt();
int[] arr= new int[n];
for(int i=0;i<=n;i++){
arr[i]=sc.nextInt();
}
grter(arr,n);
int y= arr[n];
smler(arr,n);
int z = arr[n];
System.out.println(y-z);
}
}
```

There is an approach very similar to what you want to do.

```   import java.io.*;
import java.util.*;

public class Main{

public static int smler(int arr[],int N){
int smaller = arr[0];

for (int i=1;i<N;i++){
if(arr[i] < smaller){
smaller = arr[i];
}
}

return smaller;
}
public static int grter(int arr[],int N){
int greater = arr[0];

for (int i=0;i<N;i++){
if(arr[i] > greater){
greater = arr[i];
}
}

return greater;
}

public static void main(String[] args) throws Exception {
Scanner sc= new Scanner (System.in);
int n=sc.nextInt();
int[] arr= new int[n];
for(int i=0;i<=n;i++){
arr[i]=sc.nextInt();
}

System.out.println(grter(arr, n) - smler(arr, n));
}
}
```