I would like to know why I run the algorithm on the screen, the line that asks for the student's name to be printed twice.
Scanner input = new Scanner(System.in);
System.out.println("Quando o tamanho do conjunto de alunos");
int tamanho = input.nextInt();
String[] alunos = new String[tamanho];
for(int i = 0; i < tamanho; i++)
{
System.out.println("Digite o nome do aluno");
alunos[i] = input.nextLine();
}
If you are answering the first question with 1 , it is because your loop runs once to zero, and once to one. You need to use < instead of <= :
for(int i = 0; i < TAMANHO; i++)
And for each student, instead of picking up what was typed you are picking up the rest of the previous line. Use next() instead of nextLine() :
alunos[i] = input.next();
And why not create a list of the size you need?
String[] alunos = new String[TAMANHO];
It would also be recommended not to use TAMANHO so in box-high, it seems like a constant. It would be best to use tamanho .