hollow square
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class Main {
public static void main(String[] args) {
int l = 5;
int b = 5;
for(int i = 1; i <= b; i++){
for(int j = 1; j <= l; j++){
if(j == 1 || j == l || i == 1 || i == b){
System.out.print("*");
}
else{
System.out.print(" ");
}
}
System.out.println();
}
}
}
Java
INFO