java编程：从键盘输入一行字符串，统计其中‘0’到‘9’这10数字字符出现的次数。 求java题从键盘输入一行字符串，统计其中字母数字空格极其它...
java\u7a0b\u5e8f,\u4ece\u952e\u76d8\u8f93\u5165\u4e00\u884c\u5b57\u7b26\u4e32,\u7edf\u8ba1\u5176\u4e2d\u201c0"\u5230\u201c9\u201d\u8fd910\u4e2a\u6570\u5b57\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570\u6838\u5fc3\u4ee3\u7801\uff1a
public int sum(String s){ int sum = 0; for(int k = 0,length = s.length(); k < length; k ++){ char c = s.charAt(k); if(Character.isDigit(c)){ sum += c; } } return sum;}\u5176\u4f59\u5c31\u81ea\u5df1\u5199\u5427\u3002\u3002\u3002\u592a\u957f\u61d2\u5f97\u5199\u4e86
\u697c\u4e0a\u7684\u4e0d\u884c\u5427 ,\u90fd\u6ca1\u6709\u952e\u76d8\u8f93\u5165.\u53e6\u5916\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u7528\u5148\u8f6c\u6570\u7ec4\u4e48?
\u7ed9\u4f60\u5199\u4e86\u4e00\u4e2a,\u57fa\u672c\u601d\u8def\u662f\u8fd9\u6837.\u4f60\u8bf4\u7684\u4e0d\u662f\u5f88\u6e05\u695a,\u662f\u8981\u7edf\u8ba1\u5b57\u7b26\u4e32\u7684\u5b57\u6570,\u8fd8\u662f\u7edf\u8ba1\u6bcf\u4e2a\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570/
\u5982\u679c\u4ec5\u4ec5\u662f\u8981\u7edf\u8ba1\u957f\u5ea6,\u5c31\u5f88\u7b80\u5355\u4e86.
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
Map<Integer, Integer> map = new HashMap<Integer, Integer>();
for (int i = 0; i < 10; i++) {
map.put(i, 0);
}
String s = null;
while (true) {
System.out.println("请输入：");
s = sc.nextLine();
if (Pattern.matches("^[0-9]*$", s)) {
break;
}
}
char[] a =s.toCharArray();
for (char cc:a) {
Integer in = Integer.parseInt(cc+"");
map.put(in, map.get(in)+1);
System.out.println(in);
}
System.out.println(map);
}
}
绛旓細public static void main(String[] args) throws IOException { BufferedReader br=new BufferedReader(new InputStreamReader(System.in));String str=br.readLine();int countNum = 0;//缁熻鏁板瓧鐨勪釜鏁 int countChar = 0;//缁熻鑻辨枃瀛楁瘝鐨勪釜鏁 int countSpace = 0;//缁熻绌烘牸鐨勪釜鏁 int coun...
绛旓細java 浣跨敤scanner鎺ユ敹鐢ㄦ埛浠庨敭鐩樿緭鍏鐨勫瓧绗︼紝浣跨敤while绫绘潵鍒ゆ柇鏄惁杈撳叆鐨勫瓧绗︿负鍙ュ彿锛屽涓嬩唬鐮侊細import java.util.Scanner;public class ceshi {public static void main(String[] args) {Scanner in = new Scanner(System.in);//鏂板缓涓涓猻canner绫籗tring[] input = new String[26];int i = 0;do...
绛旓細System.out.print("璇杈撳叆鏁版嵁:");try {// str=br.readLine();//浠庨敭鐩涓婅緭鍏ヤ竴涓瓧绗︿覆锛屼互鍥炶溅缁撴潫銆俧w = new FileWriter(path);bw = new BufferedWriter(fw);bw.write("澶槼鍑烘潵涓滄柟浜紝灞辩偖鍟ユ牱鎴戝暐鏍穃\n鈥︹");while(str != null){//鐢ㄤ簡寰幆鍙互澶氳緭鍏ュ嚑娆°俰f(str.equalsIgnoreCas...
绛旓細import java.util.Scanner;//缂栧啓涓涓▼搴忥紝鍏跺姛鑳戒负锛氫粠閿洏杈撳叆涓琛瀛楃锛屽垎鍒粺璁″叾涓瓧姣嶃佸瓧绗︺佺┖鏍间互鍙婂叾浠栧瓧绗︾殑涓暟 public class Test{ public static void main(String[] args){ int letter = 0;//璁板綍瀛楁瘝鐨勪釜鏁 int chars = 0;//璁板綍瀛楃鐨勪釜鏁 int space = 0;//璁板綍绌烘牸鐨勪釜鏁...
绛旓細1銆佸鏋滀綘鎯冲湪Java涓瀹氫箟涓涓嚱鏁扮殑璇濓紝棣栧厛鎴戜滑闇瑕佸畾涔変竴涓嚱鏁板悕锛屽嵆锛歩mport java.util.name;name=new name(system.in);2銆佸鏋滄兂瑕浠庨敭鐩樿緭鍏涓涓瓧绗︿覆鐨勮瘽锛屾垜浠彧闇瑕佸湪Java閲岄潰杈撳叆锛歴tring n=name.next();3銆佷絾鏄湪杈撳叆瀛楃涓蹭箣鍓嶏紝鎴戜滑闇瑕佸厛瀹氫箟鏁板煎瀷锛屽鏋滄槸瀹氫箟鏁村瀷锛岄渶瑕佽緭鍏ワ細int ...
绛旓細鍙互閫氳繃鈥漇canner鈥滃嚱鏁 鐩存帴杈撳叆鍙傛暟鐨勫舰寮忥紝鏉ュ疄鐜拌緭鍏ヨ鍙ワ紝涓句緥锛歩mport java.util.Scanner;public class Test { public static void main(String[] args) { Scanner input=new Scanner(System.in);System.out.println("璇疯緭鍏ヤ竴涓瓧绗﹀拰瀛楃涓诧細");String str2=input.next()//杈撳叆涓涓瓧绗 Str...
绛旓細//java璨屼技浠庢帶鍒跺彴璇诲叆鐨勯兘鏄瓧绗︿覆锛屼竴鑸兘瑕佽繘琛岃浆鍖栥係ystem.out.println(s);System.out.println("璇杈撳叆涓涓瓧绗︼細");char c = br.readLine().charAt(0);System.out.println(c);System.out.println("璇疯緭鍏ヤ竴涓弻绮惧害瀹炴暟锛");double d = Double.parseDouble(br.readLine()); //杞寲...
绛旓細瑙ｆ瀽1銆佽緭鍏锛氫粠閿洏杈撳叆闇瑕佺敤鍒java鐨Scanner杩欎釜util鍖呬笅鐨勫伐鍏风被 Scanner涓緭鍏ユ槸闇瑕佸杈撳叆鐨勫瓧绗﹁繘琛屽垎绫伙紝int绫诲瀷涓簄extint()鏂规硶锛宒ouble绫诲瀷涓簄extDouble()鏂规硶锛屽瓧绗︿覆绫诲瀷涓簄ext()鏂规硶銆俢ode锛歰ut:2銆佽緭鍑猴細java甯哥敤鐨勮緭鍑轰负println code:out:闄や簡println()鏂规硶涔嬪锛宩ava杩樻湁print()鍜宲rintf()...
绛旓細//java.util.Scanner鐨勪娇鐢 public class h { public static void main(String args[]){ Scanner input = new Scanner(System.in);System.out.println("璇杈撳叆瀛楃锛");while (input.hasNext()) { String a = input.next();//鎶婂瓧绗︿覆涓殑闈炴暟瀛楀叏閮ㄦ浛鎹负"" 鎵撳嵃 System.out.println(a....
绛旓細public static void main(String args[]){ String str;//鍒涘缓涓涓狟ufferedReader瀵硅薄浠庨敭鐩閫愯璇诲叆鏁版嵁 InputStreamReader isr = new InputStreamReader(System.in);BufferedReader br = new BufferedReader(isr);try{ str= br.readLine();while(!str.equals("")){ System.out.println("Read:"+...
