β λ¬Έμ
μ€λ³΅μ΄ μμ΄ μ«μλ₯Ό λ½λ λ‘λ νλ‘κ·Έλ¨μ λ§λμμ€
β μ½λ
import java.util.Random;
public class Main {
public static void main(String[] args) {
Random r = new Random();
int a = 0;
int[] lotto = new int[6];
for (int i = 0; i < lotto.length; i++) {
lotto[i] = r.nextInt(45) + 1;
for (int j = 0; j < i; j++) {
if (lotto[i] == lotto[j]) {
i--;
break;
}
}
}
for (int i = 0; i < lotto.length; i++) {
System.out.println("νμ΄μ μ«μ : " + lotto[i] + " ");
}
}
}
β μΆλ‘ κ³Όμ
μλ°μμ λμ(λλ€μ) λ§λλ κ°μ²΄ Random
random κ°μ²΄λ₯Ό μ¬μ©ν λλ λ°λμ import ν΄ μ£Όμ΄μΌ νλ€.
Random λλ€λ³μλͺ = new Random();
λ³μλͺ = λλ€λ³μλͺ .nextInt(λ²μμ)+μμμ«μ;
μ¬κΈ°μ μ€μν λΆλΆμ μ€λ³΅μ΄ μμ΄ μ«μλ₯Ό λ½μμΌ νκΈ° λλ¬Έμ λ²νΈλ₯Ό λ½κ³ λμ μ«μλ₯Ό λ°°μ΄μ λ£μ΄μ£Όκ³ , forλ¬Έμ λ리며 μλ‘ λ½μ μ«μλ₯Ό κΈ°μ‘΄μ μ«μμ νλμ© λΉκ΅ν΄ μ€λ€. (λ°°μ΄ μΈλ±μ€ 0λ²λΆν° μ°¨λ‘λ‘ λΉκ΅)
μ΄ λ, λ§μ½ μ«μκ° λμΌνλ€λ©΄ λ°λ³΅ν νμλ₯Ό -1νμ¬ λ€μ νλ² λ λ°λ³΅λ¬Έμ΄ λμκ°λλ‘ ν΄ μ€λ€.
μλλ λ΄κ° μ΄λ³΄μμ λ νμλ κΈ΄ μ½λμ΄λ€;; γ γ γ γ
import java.util.Random;
public class Main {
public static void main(String[] args) {
Random rd = new Random();
int[] nums = new int[6];
for (int i = 0; i < 6; i++) {
int t = rd.nextInt(6) + 1;
boolean found = false;
for (int j = 0; j < i; j++) {
if (nums[j] == t) {
found = true;
break;
}
}
if (found) {
i--;
continue;
}
nums[i] = t;
System.out.println("νμ΄μ μ«μ : " + t);
}
}
}