用于对字符串中的字符计数， 并可以取出出现次数最多的字符和次数， 若次数最多的有多个，则全部求出

因准备考试而写了这样一个功能，做记录并望大牛斧正

import java.util.HashMap;import java.util.Map;/** * 用于对字符串中的字符计数， 并可以取出出现次数最多的字符和次数， 若次数最多的有多个，则全部求出， 若需要最少的值，则需要一些变动 *  * @author SEC *  */public class ScanStr {/** * @param args */public static void main(String[] args) {String data = "kasdjkfadidfadfjahsdlfadshadlasdfuienasdnfa;j;vpzjsdifjasdzjncjdsdfag";ScanStr ss = new ScanStr();Map<String, Integer> map = ss.scanStr(data);Map<String, Integer> mapMax = ss.getMax(map);System.out.println(mapMax);}/** * 输入字符串对其计数 *  * @param data * @return */public Map<String, Integer> scanStr(String data) {Map<String, Integer> map = new HashMap<String, Integer>();int length = data.length();if (length > 0) {for (int i = 0; i < length; i++) {String str = data.substring(i, i + 1);Integer count = map.get(str);if (count != null) {count++;} else {count = 1;}map.put(str, count);}}return map;}/** * 获取次数最多的字符 *  * @param map * @return */public Map<String, Integer> getMax(Map<String, Integer> map) {Map<String, Integer> mapMax = new HashMap<String, Integer>();int max = 0;int maxTemp = 0;for (String key : map.keySet()) {if (max > map.get(key)) {continue;} else {max = map.get(key);if (maxTemp < max) {maxTemp = max;mapMax.clear();mapMax.put(key, max);} else {mapMax.put(key, max);}}}return mapMax;}}