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( 30 )下列程序的功能是统计字符串中 “ array ” 的个数,在程序的空白处应填入的正确选项是
public class FindKey Word s{
public static void main(sring[] args){
sting text=
“ An array is a data structur that stores a collection of ”
+ “ values of the same type . You access each individual value ”
+ “ through an integer index . For example,if a is an array ”
+ “ of inergers, then a[i] is the ith integer in the array. ” ;
Int arrayCount =0;
Int idex = -1;
Sting arrarStr = ” array ” ;
Index = text.indexof(arrayStr);
While(index______ 0) {
++arrayCount;
Index += arrayStr.length();
Index = text.indexof(arrayStr,index);
}
System.out.println
( “ the text contains ” + arrayCount + “ arrays ” );
}
}
A) <
B) =
C) <=
D) >=
参考答案