Java_exercises

FLIP COINS


class HelloDavid {
     
  public static void main(String[] args) {
        String C1D = "HEAD";
        String C2D = "HEAD";
        String C3D = "HEAD";
        int C1,C2,C3,I,Toss=0;
        I=55;
        System.out.println("Flip Three coins ");
    while (I==55) {
         C1= (int) Math.round(Math.random()*10);
         C2= (int) Math.round(Math.random()*10);
         C3= (int) Math.round(Math.random()*10);
         Toss = Toss + 1;
         if (C1<5) { C1D="HEAD"; } else { C1D="SEAL"; }
         if (C2<5) { C2D="HEAD"; } else { C2D="SEAL"; }
         if (C3<5) { C1D="HEAD"; } else { C3D="SEAL"; }
         System.out.println("Toss:"+ Toss +" Coin1:"+ C1D + " Coin2:"+ C2D + " Coin3:"+ C3D );
         if ((C1>4)&(C2>4)&(C3>4)) {  I=60; } 
          }
   
    System.out.println("Finish Target!");
 
  }
}

================================================================
https://runmycode.online/codesheet.html
=================================================================
Flip Three coins 
Toss:1 Coin1:HEAD Coin2:SEAL Coin3:HEAD
Toss:2 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:3 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:4 Coin1:HEAD Coin2:HEAD Coin3:SEAL
Toss:5 Coin1:HEAD Coin2:HEAD Coin3:SEAL
Toss:6 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:7 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:8 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:9 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:10 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:11 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:12 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:13 Coin1:HEAD Coin2:HEAD Coin3:SEAL
Toss:14 Coin1:HEAD Coin2:SEAL Coin3:SEAL
Toss:15 Coin1:HEAD Coin2:HEAD Coin3:SEAL
Toss:16 Coin1:SEAL Coin2:SEAL Coin3:SEAL
Finish Target!


==========================================================================


POSTAL CODE - CANADA


import java.io.*;
import java.util.*;

class CanadaPostCode {
public static void main(String[] args)  {
  
      Scanner kb = new Scanner(System.in);
        System.out.println("ENTER CANADIAN POSTAL CODE:");
        char CharPostCode[] = kb.nextLine().toCharArray();
        boolean ValidPostCode = false;
        int LenPostalCode = CharPostCode.length;
        
 if (LenPostalCode != 7) {System.out.println("The Canadian Postal Code Entered is not valid");}
        
 if (LenPostalCode == 7) {
    if (Character.isLetter(CharPostCode[0]) && Character.isDigit(CharPostCode[1]) && 
        Character.isLetter(CharPostCode[2]) && Character.isWhitespace(CharPostCode[3]) &&
        Character.isDigit(CharPostCode[4])  && Character.isLetter(CharPostCode[5]) &&
        Character.isDigit(CharPostCode[6]) )
        {  ValidPostCode = true; System.out.println("The Canadian Postal Code is VALID");}
       else {   System.out.println("The Canadian Postal Code Entered is NOT valid");}  
                       }
  System.out.println("Canada Post Code Entered: ");
  System.out.println(  CharPostCode); 
  System.out.println("Goodbye");
        }
  
}

=========================================================

PHONE NUMBER VALIDATION


import java.io.*;
import java.util.*;

public class PhoneCode  
{
public static void main(String[] args)   
{
  //int LenPhoneNumber = 15;
   char Numberp1='-';
   char Numberp2='(';
   char Numberp3=')';
   boolean Finish = false;
   char Leter1 = 'E';
   char Leter2 = 'X';
   char Leter3 = 'I';
   char Leter4 = 'T';
  
  while (Finish == false) 
    {
    Scanner kb = new Scanner(System.in);
    System.out.println("ENTER PHONE NUMBER:");
    char CharPhoneNumber[] = kb.nextLine().toCharArray();
    int LenPhoneNumber = CharPhoneNumber.length;
    boolean Validlen = false;
    boolean ValidPhone = false;
    int i=0;
    int countnum=0;
   
    if ((CharPhoneNumber[0] == Leter1) && (CharPhoneNumber[1] == Leter2) &&
       (CharPhoneNumber[2] == Leter3) && (CharPhoneNumber[3] == Leter4)) {
       Finish = true;}
      
   
   if ((LenPhoneNumber == 10) ||(LenPhoneNumber == 12)||(LenPhoneNumber == 13)) { Validlen = true;}
  
   if (Validlen == true) { 
     for (i=0;i<LenPhoneNumber;i++) { 
      if (Character.isDigit(CharPhoneNumber[i])) { countnum = countnum +1; }  }
        System.out.println( "Qty_Numbers : "+ countnum ); }
   
   if (countnum != 10) {ValidPhone = false;}
   
   if  (  ( (Validlen == true) && (countnum == 10) )                         ||
        ((Validlen == true) && (countnum == 10) && (LenPhoneNumber == 12) && 
       (CharPhoneNumber[4] == Numberp1) && (CharPhoneNumber[8] == Numberp1))  ||
       ((Validlen == true) && (countnum == 10) &&  (LenPhoneNumber == 13) &&
       (CharPhoneNumber[0]== Numberp2) && (CharPhoneNumber[4]== Numberp3) && 
        (CharPhoneNumber[8]== Numberp1)) )      
        {  System.out.println("Phone Number Entered is valid");
           ValidPhone = true;
           Finish = true;
        }
    
     if (ValidPhone == false)  {System.out.println("Phone Number Entered is NOT valid");
         System.out.println("Entered phone again or entry EXIT for finish");                     }
    
  }
}
}

=========================================================================

===============================================================
Nota: Dados


import java.util.Random;
public class ThreeDice {
    public static void main(String[] args) {

         int total = 0, count = 0, dice1 = 0, dice2 = 0, dice3 = 0;
        boolean cond1=false;   boolean cond2=false;

         System.out.println("Roll #\tDice1\tDice2\tDice3");
        Random rdm = new Random();

         while ((total != 6) || ((dice1 == dice2) || (dice2 == dice3) || (dice3 == dice1) || (dice1 != 1)) && (!cond2)) {
            dice1 = rdm.nextInt(6) + 1;  dice2 = rdm.nextInt(6) + 1;   dice3 = rdm.nextInt(6) + 1;
            total = dice1 + dice2 + dice3;
        
        if (total == 6 && (dice1 != dice2) && (dice2 != dice3) && (dice1 != dice3)){
           count++;   cond1=true; System.out.println(count + "   \t" + dice1 + "    \t" + dice2 + "     \t" + dice3);
        if (total == 6 && (dice1 != dice2) && (dice2 != dice3) && (dice1 != dice3) && (dice1 !=1)&& (!cond1)){ cond2=true;}
                }
            else count++;
        }
        System.out.println("Number of rolls: " + count);
    }
}



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