以下文字与答案无关
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s=''
for i in n:
___________
print(s)
选项: A:s=s*i
B:s=s+i
C:s=i*s
D:s=i+s
">4.以下程序用于输出给定三位正整数的逆序数(比如输入345,输出为543),则空白部分应该填写的内容为____________。n=input("请输入一个三位正整数:")
s=''
for i in n:
___________
print(s)
选项: A:s=s*i
B:s=s+i
C:s=i*s
D:s=i+s
A、5s
B、0.5s
C、10s
D、25s
s-1]
B:s:]
C:s:len(s)-1]
D:s0:len(s)]
A、PAL 30帧/s
B:B、NTSC 30帧/s
C:PAL 20帧/s
D:PAL 25帧/s
PAL,25 帧/s
B:NTSC,30帧/s
C:PAL,20帧/s
D:PAL,30帧/s
10-20kBit/s
B:20-30kBit/s
C:30-40kbit/s
D:100-200kbit/s
15s
B:50s
C:10s
D:2s
s2 = new String();
s2 = "study hard.";
System.out.print(s1);
System.out.println(s2);
s2 = "learn english, too";
System.out.print(s1);
System.out.println(s2);
s2 = s1 + s2;
System.out.println(s2);
}
}
">12.6.阅读程序,写出运行结果public class StringUse {
public static void main(String] args) {
String s1, s2;
s1 = new String("Students should ");
s2 = new String();
s2 = "study hard.";
System.out.print(s1);
System.out.println(s2);
s2 = "learn english, too";
System.out.print(s1);
System.out.println(s2);
s2 = s1 + s2;
System.out.println(s2);
}
}
1920s
B:1930s
C:1940s
D:1950s
3000S
B:327.67S
C:3276.7S
D:32767S