java基础

xiaoxiao2022-09-24  25

输入n个数字,以逗号,分开;然后可选择升或者降序排序;按提交键就在另一页面显示按什么排序,结果为,提供reset import java.util.*;public class bycomma{public static String[] splitStringByComma(String source){ if(source==null||source.trim().equals("")) return null; StringTokenizer commaToker = new StringTokenizer(source,","); String[] result = new String[commaToker.countTokens()]; int i=0; while(commaToker.hasMoreTokens()){ result = commaToker.nextToken(); i++; } return result;}public static void main(String args[]){String[] s = splitStringByComma("5,8,7,4,3,9,1");int[] ii = new int[s.length];for(int i = 0;i ii =Integer.parseInt(s);} Arrays.sort(ii); //asc for(int i=0;i System.out.println(ii); } //desc for(int i=(s.length-1);i>=0;i--){ System.out.println(ii); }}} 2.金额转换,阿拉伯数字的金额转换成中国传统的形式如:(¥1011)->(一千零一拾一元整)输出。 package test.format;import java.text.NumberFormat;import java.util.HashMap;public class SimpleMoneyFormat { public static final String EMPTY = ""; public static final String ZERO = "零"; public static final String ONE = "壹"; public static final String TWO = "贰"; public static final String THREE = "叁"; public static final String FOUR = "肆"; public static final String FIVE = "伍"; public static final String SIX = "陆"; public static final String SEVEN = "柒"; public static final String EIGHT = "捌"; public static final String NINE = "玖"; public static final String TEN = "拾"; public static final String HUNDRED = "佰"; public static final String THOUSAND = "仟"; public static final String TEN_THOUSAND = "万"; public static final String HUNDRED_MILLION = "亿"; public static final String YUAN = "元"; public static final String JIAO = "角"; public static final String FEN = "分"; public static final String DOT = "."; private static SimpleMoneyFormat formatter = null; private HashMap chineseNumberMap = new HashMap(); private HashMap chineseMoneyPattern = new HashMap(); private NumberFormat numberFormat = NumberFormat.getInstance(); private SimpleMoneyFormat() { numberFormat.setMaximumFractionDigits(4); numberFormat.setMinimumFractionDigits(2); numberFormat.setGroupingUsed(false); chineseNumberMap.put("0", ZERO); chineseNumberMap.put("1", ONE); chineseNumberMap.put("2", TWO); chineseNumberMap.put("3", THREE); chineseNumberMap.put("4", FOUR); chineseNumberMap.put("5", FIVE); chineseNumberMap.put("6", SIX); chineseNumberMap.put("7", SEVEN); chineseNumberMap.put("8", EIGHT); chineseNumberMap.put("9", NINE); chineseNumberMap.put(DOT, DOT); chineseMoneyPattern.put("1", TEN); chineseMoneyPattern.put("2", HUNDRED); chineseMoneyPattern.put("3", THOUSAND); chineseMoneyPattern.put("4", TEN_THOUSAND); chineseMoneyPattern.put("5", TEN); chineseMoneyPattern.put("6", HUNDRED); chineseMoneyPattern.put("7", THOUSAND); chineseMoneyPattern.put("8", HUNDRED_MILLION); } public static SimpleMoneyFormat getInstance() { if (formatter == null) formatter = new SimpleMoneyFormat(); return formatter; } public String format(String moneyStr) { checkPrecision(moneyStr); String result; result = convertToChineseNumber(moneyStr); result = addUnitsToChineseMoneyString(result); return result; } public String format(double moneyDouble) { return format(numberFormat.format(moneyDouble)); } public String format(int moneyInt) { return format(numberFormat.format(moneyInt)); } public String format(long moneyLong) { return format(numberFormat.format(moneyLong)); } public String format(Number moneyNum) { return format(numberFormat.format(moneyNum)); } private String convertToChineseNumber(String moneyStr) { String result; StringBuffer cMoneyStringBuffer = new StringBuffer(); for (int i = 0; i < moneyStr.length(); i++) { cMoneyStringBuffer.append(chineseNumberMap.get(moneyStr.substring(i, i + 1))); } //拾佰仟万亿等都是汉字里面才有的单位,加上它们 int indexOfDot = cMoneyStringBuffer.indexOf(DOT); int moneyPatternCursor = 1; for (int i = indexOfDot - 1; i > 0; i--) { cMoneyStringBuffer.insert(i, chineseMoneyPattern.get(EMPTY + moneyPatternCursor)); moneyPatternCursor = moneyPatternCursor == 8 ? 1 : moneyPatternCursor + 1; } String fractionPart = cMoneyStringBuffer.substring(cMoneyStringBuffer.indexOf(".")); cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("."), cMoneyStringBuffer.length()); while (cMoneyStringBuffer.indexOf("零拾") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零拾"), cMoneyStringBuffer.indexOf("零拾") + 2, ZERO); } while (cMoneyStringBuffer.indexOf("零佰") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零佰"), cMoneyStringBuffer.indexOf("零佰") + 2, ZERO); } while (cMoneyStringBuffer.indexOf("零仟") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零仟"), cMoneyStringBuffer.indexOf("零仟") + 2, ZERO); } while (cMoneyStringBuffer.indexOf("零万") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零万"), cMoneyStringBuffer.indexOf("零万") + 2, TEN_THOUSAND); } while (cMoneyStringBuffer.indexOf("零亿") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零亿"), cMoneyStringBuffer.indexOf("零亿") + 2, HUNDRED_MILLION); } while (cMoneyStringBuffer.indexOf("零零") != -1) { cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零零"), cMoneyStringBuffer.indexOf("零零") + 2, ZERO); } if (cMoneyStringBuffer.lastIndexOf(ZERO) == cMoneyStringBuffer.length() - 1) cMoneyStringBuffer.delete(cMoneyStringBuffer.length() - 1, cMoneyStringBuffer.length()); cMoneyStringBuffer.append(fractionPart); result = cMoneyStringBuffer.toString(); return result; } private String addUnitsToChineseMoneyString(String moneyStr) { String result; StringBuffer cMoneyStringBuffer = new StringBuffer(moneyStr); int indexOfDot = cMoneyStringBuffer.indexOf(DOT); cMoneyStringBuffer.replace(indexOfDot, indexOfDot + 1, YUAN);
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