Java 中文字符的排序

项目中往往需要集合按照中文字符排序，而且java 自带的String 本身

public int compareTo(String anotherString) {
	int len1 = count;
	int len2 = anotherString.count;
	int n = Math.min(len1, len2);
	char v1[] = value;
	char v2[] = anotherString.value;
	int i = offset;
	int j = anotherString.offset;

	if (i == j) {
	    int k = i;
	    int lim = n + i;
	    while (k < lim) {
		char c1 = v1[k];
		char c2 = v2[k];
		if (c1 != c2) {
		    return c1 - c2;
		}
		k++;
	    }
	} else {
	    while (n-- != 0) {
		char c1 = v1[i++];
		char c2 = v2[j++];
		if (c1 != c2) {
		    return c1 - c2;
		}
	    }
	}
	return len1 - len2;
    }

这样并不能满足中文字符的排序，但是你可以使用

Collator java.text.Collator.getInstance()
Gets the Collator for the current default locale. The default locale is determined by java.util.Locale.getDefault.

来辅助排序

评论

1 楼 huohu0321 2012-03-07  

还有这种方法.....