字母表是 {0, 1},包含01子串的所有串为()。 A: (0|1)*(01)+ B: (0|1)*01 C: (0*010*10*)* D: (0|1)*01(0|1)*
字母表是 {0, 1},包含01子串的所有串为()。 A: (0|1)*(01)+ B: (0|1)*01 C: (0*010*10*)* D: (0|1)*01(0|1)*
s=’Python is beautiful! ’ 可以输出“PYTHON”的是 A: print(s[0:7]) B: print(s[0:7].upper()) C: print(s[-21:-14].upper) D: print(s[:-14])
s=’Python is beautiful! ’ 可以输出“PYTHON”的是 A: print(s[0:7]) B: print(s[0:7].upper()) C: print(s[-21:-14].upper) D: print(s[:-14])
s=’Python is beautiful! ’, 可以输出“python”的是: A: print(s[0:7]) B: print(s[0:7].lower()) C: print(s[-21:-14].lower) D: print(s[:-14])
s=’Python is beautiful! ’, 可以输出“python”的是: A: print(s[0:7]) B: print(s[0:7].lower()) C: print(s[-21:-14].lower) D: print(s[:-14])
下列程序段中,循环体s = s +1执行了几次? For i = 0 To 7 Step 3 For j = 0 To 7 Step 2 s = s + 1 Next Next
下列程序段中,循环体s = s +1执行了几次? For i = 0 To 7 Step 3 For j = 0 To 7 Step 2 s = s + 1 Next Next
下列程序段中,循环体s = s +1执行了几次?For i = 0 To 7 Step 3 For j = 0 To 7 Step 2 s = s + 1 NextNext A: 5 B: 7 C: 12 D: 49
下列程序段中,循环体s = s +1执行了几次?For i = 0 To 7 Step 3 For j = 0 To 7 Step 2 s = s + 1 NextNext A: 5 B: 7 C: 12 D: 49
设有如下代码段 1 String s = null; 2 if ( s != null & s.length() > 0) 3 System.out.println("s != null & s.length() > 0"); 4 if ( s != null && s.length() > 0) 5 System.out.println("s != null & s.length() > 0"); 6 if ( s != null || s.length() > 0) 7 System.out.
设有如下代码段 1 String s = null; 2 if ( s != null & s.length() > 0) 3 System.out.println("s != null & s.length() > 0"); 4 if ( s != null && s.length() > 0) 5 System.out.println("s != null & s.length() > 0"); 6 if ( s != null || s.length() > 0) 7 System.out.
int s= 0; for(int sum=1; sum<=1000; ____ ){if(sum%7!=0){s = sum +s;}}System.out.println(s); A: sum+1 B: sum-1 C: sum++ D: sum--
int s= 0; for(int sum=1; sum<=1000; ____ ){if(sum%7!=0){s = sum +s;}}System.out.println(s); A: sum+1 B: sum-1 C: sum++ D: sum--
正则表达式(01|10|1001|0110)*与下列哪个表达式一样?1.(0|1)*2.(01|01)*3.(01|10)*4.(11|01)*5.(01|1)*
正则表达式(01|10|1001|0110)*与下列哪个表达式一样?1.(0|1)*2.(01|01)*3.(01|10)*4.(11|01)*5.(01|1)*
s="Python is cool",可以输出"python"的是 A: print(s[0:7]) B: print(s[:7].lower()) C: print(s[:-8].lower()) D: print(s[-14:-8])
s="Python is cool",可以输出"python"的是 A: print(s[0:7]) B: print(s[:7].lower()) C: print(s[:-8].lower()) D: print(s[-14:-8])
If a=[1 4;5 6], c=a<5. Then c=? A: 0 1 1 0 B: 0 01 1 C: 1 10 0 D: 1 01 0
If a=[1 4;5 6], c=a<5. Then c=? A: 0 1 1 0 B: 0 01 1 C: 1 10 0 D: 1 01 0