MyStrings.java

package edu.fudan.util;

import java.util.List;

/**
 * 自定义字符串操作类
 * @author xpqiu
 * @version 1.0
 * @since FudanNLP 1.5
 */
public class MyStrings {

	public static String normalizeRE(String string) {
		StringBuffer sb = new StringBuffer();
		for(int i = 0;i<string.length();i++){
			char c = string.charAt(i);
		}
		//([{\^-$|}])?*+
		return sb.toString();
	}

	/**
	 * 将数组元素用空格隔开，返回字符串
	 * @param s 二维数组
	 * @param delim1  列分隔符
	 * @param delim2  行分隔符
	 * @return
	 */
	public static String toString(String[][] s,String delim1, String delim2) {
		StringBuilder sb = new StringBuilder();

		for(int i=0;i<s.length;i++){
			for(int j=0;j<s[i].length;j++){
				sb.append(s[i][j]);
				if(j<s[i].length-1)
					sb.append(delim1);
			}
			if(i<s.length-1)
				sb.append(delim2);
		}
		return sb.toString();
	}

	/**
	 * 将数组转换成字符串
	 * @param s 数组
	 * @param delim 分隔符
	 * @return
	 */
	public static String toString(List s,String delim) {
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<s.size();i++){
			sb.append(s.get(i));
			if(i<s.size()-1)
				sb.append(delim);
		}
		return sb.toString();

	}
	/**
	 * 将数组转换成字符串
	 * @param s 数组
	 * @param delim 分隔符
	 * @return
	 */
	public static String toString(Object[] s,String delim) {
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<s.length;i++){
			sb.append(s[i]);
			if(i<s.length-1)
				sb.append(delim);
		}
		return sb.toString();

	}

	public static String toString(int[] s, String delim) {
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<s.length;i++){
			sb.append(s[i]);
			if(i<s.length-1)
				sb.append(delim);
		}
		return sb.toString();
	}
	/**
	 * 
	 * @param s
	 * @param delim
	 * @return
	 */
	public static String toString(float[] s, String delim) {
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<s.length;i++){
			sb.append(s[i]);
			if(i<s.length-1)
				sb.append(delim);
		}
		return sb.toString();
		
	}
	
	/**
	 * 字符在字符串中出现的次数
	 * 
	 * @param str
	 * @param a
	 * @return
	 */
	public static int countOccurTimes(String str, String a) {
		int pos = -2;
		int n = 0;

		while (pos != -1) {
			if (pos == -2) {
				pos = -1;
			}
			pos = str.indexOf(a, pos + 1);
			if (pos != -1) {
				n++;
			}
		}
		return n;
	}

	public static String toString(float[][] s) {
		StringBuilder sb = new StringBuilder();

		for(int i=0;i<s.length;i++){
			for(int j=0;j<s[i].length;j++){
				sb.append(s[i][j]);
				if(j<s[i].length-1)
					sb.append(" ");
			}
			if(i<s.length-1)
				sb.append("\n");
		}
		return sb.toString();
	}

	

}