How to take input

#1

N x y z

5
1 2 3 4 5

how do i have to take input input n in first and then n sapace separated intgers or all in same line including n

#2

int n=scn.nextInt();
then make a array of size n

int arr[]=new int[n];
then take n integers
for(int i=0;i<n;i++)
arr[i]=scn.nextInt();

#3

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