import java.util.Scanner;
class Demo01{
public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter the integers between 1 and 100:");
int[] arr=new int[0];
/*
給數組賦值的整個過程
*/
while(true){
int num=input.nextInt();
if(num==0){
break;
}
arr=copyOf(arr);
arr[arr.length-1]=num;
}
/*
冒泡排序
*/
paiXu(arr);
/*
打印排序之後的數組
*/
show(arr);
/*
記錄次數的整個過程
*/
ciShu(arr);
}
/*
數組擴容
*/
public static int[] copyOf(int[] arr){
int[] newArr=new int[arr.length+1];
for(int i=0;i<arr.length;i++){
newArr[i]=arr[i];
}
return newArr;
}
/*
冒泡排序
*/
public static void paiXu(int[] arr){
int temp1;
for(int i=0;i<arr.length;i++){
for(int j=0;j<arr.length-1;j++){
if(arr[j]>arr[j+1]){
temp1=arr[j];
arr[j]=arr[j+1];
arr[j+1]=temp1;
}
}
}
}
/*
記錄次數的整個過程
*/
public static void ciShu(int[] arr){
int temp2=1;
for(int j=0;j<arr.length-1;j++){
if(j<arr.length-2){
if(arr[j]!=arr[j+1]){
System.out.println(arr[j]+" occurs "+temp2+" times");
temp2=1;
}else{
temp2++;
}
}else{
if(arr[j]==arr[j+1]){
temp2++;
System.out.println(arr[j]+" occurs "+temp2+" times");
}else{
System.out.println(arr[j+1]+" occurs "+temp2+" times");
}
}
}
}
/*
打印數組
*/
public static void show(int[] arr){
for(int i=0;i<arr.length;i++){
System.out.print(arr[i]+" ");
}
System.out.println();
}
}
import java.util.Scanner;
class Demo02{
public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter ten number:");
int[] arr1=new int[10];
int[] arr2=new int[10];//備用
int count1=0,count2=1,count3=0;
while(true){
int num=input.nextInt();
arr1[count1++]=num;
if(count1==10){
break;
}
}
/*
遍歷數組arr1
*/
for(int i=0;i<count1;i++){
if(i==0){
arr2[count3++]=arr1[i];
}else{
for(int j=0;j<count3;j++){
if(arr1[i]==arr2[j]){
count2++;
}
}
if(count2==1){
arr2[count3++]=arr1[i];
}
count2=1;
}
}
System.out.println("The number of distinct number:"+count3);
System.out.print("The distinct numbers are:");
for(int i=0;i<count3;i++){
System.out.print(arr2[i]+" ");
}
System.out.println();
}
}
import java.util.Scanner;
class Demo04{
public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter a balls:");
int balls=input.nextInt();
System.out.print("Enter a slots:");
int slots=input.nextInt();
int[] slot=new int[slots];
String str="";
//int count=0;
for(int i=1;i<=balls;i++){
str=random(slots);
System.out.println(str);
slot[getCount(str)]++;
}
for(int i=0;i<slot.length;i++){
System.out.print(slot[i]+" ");
}
}
public static String random(int slots){
String str="";
for(int j=0;j<slots-1;j++){
if((int)(Math.random()*2)==0){
str=str+"L";
}else{
str=str+"R";
}
}
return str;
}
public static int getCount(String str){
int count=0;
for(int l=0;l<str.length();l++){
if(str.charAt(l)=='R'){
count++;
}
}
return count;
}
}
import java.util.Scanner;
class Demo08{
public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter strings:");
String[] str=new String[0];
String word="";
int count1=0,count2=0;
while(true){
String str1=input.next();
/*
記錄輸入字符的個數
*/
count1++;
str=copyOf(str);
str[str.length-1]=str1;
if(count1==4){
break;
}
}
word=str[(int)(Math.random()*str.length)];
//存放密文
char[] ciphertext=new char[word.length()];
//將密文轉化爲字符串
String string="",string1="";
string1=word;
for(int i=0;i<word.length();i++){
ciphertext[i]='*';
}
while(true){
while(true){
System.out.print("Enter a letter in word:");
for(int i=0;i<ciphertext.length;i++){
System.out.print(ciphertext[i]);
}
System.out.print("->");
//存放用戶猜測的字符
char c=input.next().charAt(0);
if(isExisten(ciphertext,c)){
System.out.println(c+" is already in the word");
}else{
/*
判斷該字符是否出現
*/
if(!isExistence(c,word,ciphertext)){
/*
記錄輸入錯誤的次數
*/
count2++;
System.out.println(c+" is not already in the word ");
}
}
for(int i=0;i<ciphertext.length;i++){
string+=ciphertext[i];
}
/*
是否結束
*/
if(string.equals(word)){
break;
}
string="";
}
/*
重新賦值爲空字符串
*/
string=bulid();
System.out.println("The word is program,You missed "+count2+" times");
System.out.print("Do you want to guess another word?Enter y or n:");
char inputChar=input.next().charAt(0);
if(inputChar=='y'){
word=str[(int)(Math.random()*str.length)];
ciphertext=printText(word);
for(int i=0;i<word.length();i++){
ciphertext[i]='*';
}
count2=0;
}else{
break;
}
}
}
/*
重新創建一個空串
*/
public static String bulid(){
String string="";
return string;
}
/*
密文更新
*/
public static char[] printText(String str){
char[] newCiphertext=new char[str.length()];
return newCiphertext;
}
/*
數組的擴容
*/
public static String[] copyOf(String[] str){
String[] newStr=new String[str.length+1];
for(int i=0;i<str.length;i++){
newStr[i]=str[i];
}
return newStr;
}
/*
數組的輸出
*/
public static void show(String[] str){
for(int i=0;i<str.length;i++){
System.out.print(str[i]+" ");
}
System.out.println();
}
/*
判斷該字符是否出現
*/
public static boolean isExistence(char c,String word,char[] ciphertext){
int count=0;
char[] arrC=word.toCharArray();
for(int i=0;i<arrC.length;i++){
if(arrC[i]==c){
ciphertext[i]=c;
count++;
}
}
if(count>=1){
return true;
}else{
return false;
}
}
/*
遍歷密文中是否存在該字符
*/
public static boolean isExisten(char[] ciphertext,char c){
int count=0;
for(int i=0;i<ciphertext.length;i++){
if(ciphertext[i]==c){
count++;
}
}
if(count>=1){
return true;
}else{
return false;
}
}
}
運行結果：
Enter strings:write that program take
Enter a letter in word:*****->w
Enter a letter in word:w****->t
Enter a letter in word:w**t*->r
Enter a letter in word:wr*t*->i
Enter a letter in word:writ*->e
The word is program,You missed 0 times
Do you want to guess another word?Enter y or n:y
Enter a letter in word:*******->p
Enter a letter in word:p******->r
Enter a letter in word:pr**r**->p
p is already in the word
Enter a letter in word:pr**r**->o
Enter a letter in word:pro*r**->g
Enter a letter in word:progr**->n
n is not already in the word
Enter a letter in word:progr**->m
Enter a letter in word:progr*m->a
The word is program,You missed 1 times
Do you want to guess another word?Enter y or n:n