JAVA for문 QUIZ 4>

0911 수업기록_

Quiz 4> For문을 활용하여 문제를 풀어보시오

1. 0 3 6 9 12 .... 93 96 99

2. -35 -28 -21 .... 0 7 14 ... 35

3. 100 200 300.... 800 900 1000

4. 100 99 98 97 .... 5 4 3 2 1 0

5. 0 1 2 3... 7 8 9 0 1 2 3 . .. 7 8 9... (30번)

6. 10 9 8 7 ...3 2 1 10 9 8... 3 2 1 ...3 2 1 (30번)

7. 7 77 777 7777 7777...7777777777

>>7이 하나씩 늘어나는 것, 7*10 +7 이 10번 반복 되는것

 

package quiz;

public class B06_ForQuiz_3 {

        public static void main(String[] args) {

                for(int i=0; i<100 ;i+=3) {

                        System.out.print(i+" ");                

                }

//출력 : 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99

                for(int i = -35; i<=35; i+=7) {

                        System.out.print(i+" ");        

                }

// 출력 : -35 -28 -21 -14 -7 0 7 14 21 28 35

                for(int i=100 ; i <=1000; i+=100) {

                        System.out.print(i +" ");

                }

// 출력 : 100 200 300 400 500 600 700 800 900 1000

                for(int i=100; i>=0; i -=1) {

                        System.out.print(i +" ");

                }

//출력 :100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

                for(int i =0; i < 300 ; i++) {

                        System.out.print(i%10 +" ");

                }

// 출력 :0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9

                for(int i =0; i < 300 ; i++) {

                        System.out.print(10 -(i%10) +" "); // 10 -0 -> 10 , 10-1 ->9 .. 나머지(i%10)를 10에서 빼주면됨

                }        

//출력 :10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1

 

              for(long i=7; i<=7777777777L ; i=i*10+7){

                        System.out.print(i +" "); /// 내가풀어본것

                }

                System.out.println();

                long num =7;

                for(long i=0 ; i<10 ;i++){

                        System.out.print(num+" "); /// 선생님 풀이

                        num = num*10+7;

                }

// 출력 : 7 77 777 7777 77777 777777 7777777 77777777 777777777 7777777777

        }

}