功能函数整理(1)

{1:A}    
{2:B}               {1:A,C}
{1:C}        转变成  {2:B,G}
{3:D}  ===========> {3:D,F,H}
{4:E}               {4:E}
{3:F}
{2:G}
{3:H}

====================================================================================================================================

import java.util.List;
import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
public class lzwCode {

	public static void main(String [] args) {
		codeTest();
	}
	public static void codeTest() {
		String str[] = {"1:A", "2:B", "1:C", "3:D", "4:E", "3:F", "3:H", "2:G"};
		Map<Integer, List<String>> map = new HashMap<Integer, List<String>>();
		for (int i=0; i<str.length; i++) {
			int key = Integer.parseInt(str[i].split(":")[0]);
			String tmp = str[i].split(":")[1];
			List<String> list = map.get(key);
			if (list == null) {
				list = new ArrayList<String>();
			}
			list.add(tmp);
			map.put(key, list);
		}
		System.out.println(map.toString());
	}
}

 

控制台结果如下：

 PHP实现该功能：

<?php
function lzwCode() {
	$strArr = array("1:A", "2:B", "1:C", "3:D", "4:E", "3:F", "3:H", "2:G");  
	$arrayTemp = array();
	foreach ($strArr as $value) {
		$strTemp = explode(":", $value);
		$key = $strTemp[0];
		$val = $strTemp[1];
		if (array_key_exists($key, $arrayTemp)) {
			$arrayTemp[$key] = $arrayTemp[$key].",".$val;
		} else {
			$arrayTemp[$key] = $val;
		}
	}
	return $arrayTemp;
}
print_r(lzwCode());
?>

结果如下：