请教一个面试问题

[yyjl1983]

请你用java写一个方法，计算字符串“KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world”的单词个数。

[justinavril]

String textString = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";

String tempString = textString.replaceAll(" ", "");

int wordNum = (textString.length - tempString.length) + 1;

[believefym]

String str = "KWA, where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";
    	System.out.println(str.split("[, ]+").length);

[tt2451]

String str = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";

        String []a=str.split(" |，");
        for(String sss:a)
        {
            System.out.println(sss);
        }
        System.out.println(a.length);

注意全半角标点

[justinavril]

[Quote=引用 3 楼 tt2451 的回复:]
Java code
String str = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";

String []a=str.split(" |，");
for(String sss:a)
{
System.out.println(sss);
}
System.out.println(a.length);





注意全半角…
[/Quote]
I assume that "world's" is one word. And also we know there is no "，" in English, but "," does exist.

[mengweilil]

[Quote=引用 2 楼 believefym 的回复:]
Java codeString str="KWA, where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";
System.out.println(str.split("[, ]+").length);
[/Quote]

我想，这个应该是最佳答案了，其实面试题就是考正则表达式的吧？

btw：,应该是，全角半角的区别，不过都是小问题了。

[lizhi1026]

[Quote=引用 1 楼 justinavril 的回复:]
Java codeString textString = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";

String tempString = textString.replaceAll(" ", "");

int wordNum = (textString.length - tempString.length) + 1;
[/Quote]

这个不可取，如果字符串里有其他的标点符号呢？
PS：还是2楼的好。

[justinavril]

[Quote=引用 6 楼 lizhi1026 的回复:]
引用 1 楼 justinavril 的回复:
Java codeString textString = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";

String tempString = textString.replaceAll(" ", "");

int wordNum = (textString.length - tempString.length) + 1;


这个不可取，如果字符串里有…
[/Quote]
maybe I need to replaceAll("[, ]", "");

[yeruping]

String s = "KWA，where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world";
		String[] str=(s.split("[\\，| ]"));		
		System.out.println(str.length);

主要是半角还是全角的问题 ....

[yyjl1983]

谢谢大家 正则表达式应该是最好的答案了

[bobor_2008]

public static void main(String[] args) {
		String date = (new Date(System.currentTimeMillis())).toString();
		String abc="“KWA，fd,fsd,where one-fifth of the world's population in the fastest growing economy in the world has a rapidly growing desire and income to consume healthcare products from around the world”";
		String []abcd=abc.split(" |，|,");
		int i=0;
		for(String s:abcd){
			System.out.println("第["+(++i)+"]个单词是:"+s);
			System.out.println(++i);
		}
System.out.println("总共:"+i+"个单词.");
	}

=================================================
这段代码是仅针对你这段作的统计单词的个数.