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Bonjour,
j'aimerais creer un code qui me permettrait d'obtenir ceci:

This program prints the power set of the set of natural numbers 0 ... N.
Enter N (0 <= N <= 10): 1,5
Illegal numeric format
Enter N (0 <= N <= 10): -2
Enter N (0 <= N <= 10): 31
Enter N (0 <= N <= 10): 2
The powerset of { 0, 1, 2 } is
{ { }, { 0 }, { 1 }, { 0, 1 }, { 2 }, { 0, 2 }, { 1, 2 }, { 0, 1, 2 } }

VOICI MON CODE REDIGE PAR MOI:

import acm.program.ConsoleProgram;

public class PowerSet extends ConsoleProgram {

public void run(){
println("This program prints the power set of the set of natural numbers 0");

int N = readInt("Insert a natural number:");
while(true){
if(0> N||N >10 ){
readInt("Insert a natural number:");

}


}




if(0<=N ||N<=10 ){ // SI LE NOMBRE EST COMPRIS ENTRE 0 ET 10....la Formule magique...

}

comment continuer svp?