자바별찍기

자바별찍기

1.

package ITlick_java.star;

public class lick_star1 {
    public static void main(String[] args) {
        for (int i = 0; i < 5; i++) {
            System.out.print("*");
        }
    }
}

2.

package ITlick_java.star;

public class lick_star2 {
    public static void main(String[] args) {
        for (int i = 0; i < 5; i++) {
            System.out.println("*");
        }
    }
}

 

 

3.

package ITlick_java.star;

public class lick_star3 {
    public static void main(String[] args) {
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j<5;j++){
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

4.

package ITlick_java.star;

public class lick_star4 {
    public static void main(String[] args) {
        for (int i = 1; i < 6; i++) {
            for (int j = 1; j < 6; j++) {
                System.out.print(i);
            }
            System.out.println();
        }
    }
}

5.

package ITlick_java.star;

public class lick_star5 {
    public static void main(String[] args) {
        for (int i = 0; i < 5; i++) {
            for (int j = 1; j < 6; j++) {
                System.out.print(j);
            }
            System.out.println();
        }
    }
}

 

6.

package ITlick_java.star;

public class lick_star6 {
    public static void main(String[] args) {
        for (int i = 1; i < 6; i++) {
            for (int j = 0; j < 5; j++) {
                System.out.print(i+j);
            }
            System.out.println();
        }
    }
}

 

 

7.

package ITlick_java.star;

public class lick_star7 {
    public static void main(String[] args){
        for (int i = 5; i>0; i--) {
            for (int j = 0; j<5; j++) {
                System.out.print(i+j);
            }
            System.out.println();
        }
    }
}

8.

package ITlick_java.star;

public class lick_star8 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

9.

package ITlick_java.star;

public class lick_star9 {
    public static void main(String[] args) {
        for (int i = 5; i > 0; i--) {
            //for (int i = 0; i < 5; i++) {
            for (int j = 0; j < i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

10.

package ITlick_java.star;

public class lick_star10 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < i; j++) {
                System.out.print(" ");
            }
            for (int j = 5; j > i; j--) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

11.

package ITlick_java.star;

public class lick_star11 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 4; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

10번 코드에서  for문 위아래만 변경

 

12.

package ITlick_java.star;

public class lick_star12 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 5; i > 0; i--) {
            for (int j = 1; j < i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

13.

뭔가가 안될땐 결과를 다른문자들을 확인하면 좋다.

package ITlick_java.star;

public class lick_star13 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 5; i > 0; i--) {
            for (int j = 0; j < i; j++) {
                System.out.print("&");
            }
            System.out.println();
        }
        for (int i = 1; i < 5; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

 

14.

package ITlick_java.star;

public class lick_star14 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < i; j++) {
                System.out.print(" ");
            }
            for (int j = 5; j > i; j--) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 0; i < 5; i++) {
            for (int j = 4; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

 

15.

package ITlick_java.star;

public class lick_star15 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 4; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 1; i < 5; i++) {
            for (int j = 0; j < i; j++) {
                System.out.print(" ");
            }
            for (int j = 5; j > i; j--) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

16.

package ITlick_java.star;

public class lick_star16 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 5; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j < 2 * i + 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

17.

package ITlick_java.star;

public class lick_star17 {
    public static void main(String[] args) {
        for (int i = 5; i > 0; i--) {
            //for (int i = 0; i < 5; i++) {
            for (int j = 5; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j < 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

공백에 &을 주면 확인하기 용의하다

18.

package ITlick_java.star;

public class lick_star18 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 5; j > i; j--) {
                System.out.print("&");
            }
            for (int j = 0; j < 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 5; i > 0; i--) {
            //for (int i = 0; i < 5; i++) {
            for (int j = 5; j > i; j--) {
                System.out.print("&");
            }
            for (int j = 0; j < 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

19.

package ITlick_java.star;

public class lick_star19 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 0; i < 5; i++) {
            for (int j = 5; j >= i; j--) {
                System.out.print("*");
            }
            for (int j = 0; j < 2 * i + 1; j++) {
                System.out.print(" ");
            }
            for (int j = 5; j >= i; j--) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            for (int j = 10; j > 2 * i - 1; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

20.

package ITlick_java.star;

public class lick_star20 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 1; i < 5; i++) {
            for (int j = 0; j < i; j++) {
                System.out.print("*");
            }
            for (int j = 10; j > 2 * i - 1; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j < i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int i = 0; i < 5; i++) {

            for (int j = 5; j > i; j--) {
                System.out.print("*");
            }
            for (int j = 0; j < 2 * i + 1; j++) {
                System.out.print(" ");
            }
            for (int j = 5; j > i; j--) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

 

21.

package ITlick_java.star;

public class lick_star21 {
    public static void main(String[] args) {
        //for (int i = 5; i>0; i--) {
        for (int i = 1; i<5; i++){
            for (int j = 0; j<i; j++){
                System.out.print(" ");
            }
            for (int j = 10; j > 2 * i - 1; j--) {
                System.out.print("*");
            }
            for (int j = 0; j < i; j++) {
                System.out.print(" ");
            }
            System.out.println();
        }
        for (int i = 0; i < 5; i++) {
            for (int j = 5; j > i; j--) {
                System.out.print(" ");
            }
            for (int j = 0; j < 2 * i + 1; j++) {
                System.out.print("*");
            }
            for (int j = 5; j > i; j--) {
                System.out.print(" ");
            }
            System.out.println();
        }

    }
}