1006 换个格式输出整数 （15 分) Java练习&PTA乙级

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import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int a = in.nextInt();
		if(a >= 100) {
			int t = a / 100;
			while((t--) > 0) {
				System.out.print("B");
			}
			a = a % 100;
		}
		if(a >= 10) {
			int t = a / 10;
			while((t--) > 0) {
				System.out.print("S");
			}
			a = a % 10;
		}
		if(a >= 1) {
			for(int i = 1; i <= a; ++i) {
				System.out.print(i);
			}
		}
	}

}