统计字符串中每个字母出现的次数

	public void count(String string) {
		char[] c=string.toCharArray();
		Map<Character, Integer> map=new HashMap<Character, Integer>();
		for(int i=0;i<c.length;i++) {
			if(map.containsKey(c[i])) {
				map.put(c[i], map.get(c[i])+1);
			}else {
				map.put(c[i],1);
			}
		}
		for(Character character:map.keySet()) {
			System.out.println(character+":"+map.get(character));
		}

	}