myutils.java

来自「问题描述 设计一个由正规文法生成First集和Follow集并进行简化的算」· Java 代码 · 共 28 行

package sun.chenzhipeng.main;

import java.util.List;

public class MyUtils {
	public static String[] convert(List list,String FirstOrFollow) {
		String s[] = new String[list.size() + 1];
		s[0] = FirstOrFollow;
		for (int i = 0; i < list.size(); i++) {
			s[i + 1] = (String) list.get(i);
		}
		return s;
	}

	public static String[] convert(List list, String s[], String vn) {
		String[] str = new String[s.length];
		str[0] = vn;
		for (int i = 1; i < str.length; i++) {
			if (list.contains(s[i])) {// 如果集合包含数组中的该元素
				str[i] = "1";// 则标记为1
			} else {
				str[i] = "";// 否则标记为空
			}
		}
		return str;
	}
}