Java Fundamentals 03

1. Let the user enter a score (0-100), determine which range the score belongs to and output the results (first draw a flowchart in Word)

(90-100->a 70-90->b 60-70->c <60--d)

Import Java.util.Scanner;

public class Problem1 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

SYSTEM.OUT.PRINTLN ("Please output a score (0-100):");

int Score=scan.nextint ();

if (score<=100&&score>=90) {

System.out.println ("A");

}else if (score<90&&score>=70) {

System.out.println ("B");

}else if (score<70&&score>=60) {

System.out.println ("C");

}else if (score<60&&score>=0) {

System.out.println ("D");

}else{

SYSTEM.OUT.PRINTLN ("You have entered the wrong score.) ");

}

}

}

2. Let the user enter a positive integer

1) Determine whether the number is odd or even, and output the judging result

2) Determine if the number is a narcissus number and output the result (only 3 digits to consider)

Import Java.util.Scanner;

public class Problem2 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Please enter a positive integer:");

int Num=scan.nextint ();

if (num<=0) {

System.out.println ("The number you entered is incorrect");

}else if (num%2==0) {

System.out.println ("The number is even");

}else{

System.out.println ("The number is odd");

}

int ge=num;

int SHI=NUM/10;

int bai=num/100;

if (num>=100&&num<1000&&ge*ge*ge+shi*shi*shi+bai*bai*bai==num) {

System.out.println ("The number is the number of daffodils");

}else if (num>=100&&num<1000&&ge*ge*ge+shi*shi*shi+bai*bai*bai!=num) {

System.out.println ("The number is not the number of daffodils");

}

//

for (int x=100;x<1000;x++) {

int ge=x;

int SHI=X/10;

int bai=x/100;

if (ge*ge*ge+shi*shi*shi+bai*bai*bai==x) {

SYSTEM.OUT.PRINTLN (x);

SYSTEM.OUT.PRINTLN (GE);

System.out.println (shi);

System.out.println (BAI);

//  }

//  }

}

}

3. Let the user enter a number, must be 1 to 7 (if the input is wrong, then the error), and then according to the number of user input to determine the day of the week (1: Monday, 2: Tuesday, ....., 7: Sunday. Requires judgment week using switch structure to complete)

Import Java.util.Scanner;

public class Problem3 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.println ("Please enter Number (1-7)");

int Number=scan.nextint ();

Switch (number) {

Case 1:

System.out.println ("Monday");

Break

Case 2:

System.out.println ("Tuesday");

Break

Case 3:

System.out.println ("Wednesday");

Break

Case 4:

System.out.println ("Thursday");

Break

Case 5:

System.out.println ("Friday");

Break

Case 6:

System.out.println ("Saturday");

Break

Case 7:

System.out.println ("Sunday");

Break

Default:

System.out.println ("The number you entered is incorrect");

Break

}

}

5. Let the user enter a year (1900-2100, if not in this range, then prompt error), determine whether the year is a leap or common year.

Leap year rules: 4 Years A leap, a century does not leap; 400 years a leap.

Import Java.util.Scanner;

public class Problem5 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Please enter a year (1900-2100):");

int Year=scan.nextint ();

if (year<1900| | YEAR>2100) {

SYSTEM.OUT.PRINTLN ("You entered the wrong year");

}else if (year>=1900&&year<=2100) {

if (year%4==0| | year0!=0) &&[email protected]==0) {

System.out.println (year+ "Years is a leap year");

}else{

SYSTEM.OUT.PRINTLN (year+ "Year is common year");

}

}

}

}

6. Let the user enter 3 numbers and then output in order from small to large.

Import Java.util.Scanner;

public class Problem6 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Please enter three different numbers, \ n The first number:");

int Num1=scan.nextint ();

System.out.print ("second number:");

int Num2=scan.nextint ();

System.out.print ("Third number:");

int Num3=scan.nextint ();

int max=num1;

if (max>num2) {

if (max>num3) {

if (num2>num3) {

System.out.println (num3+ "," +num2+ "," +num1 ");

}else{

System.out.println (num2+ "," +num3+ "," +num1 ");

// }

}else{

System.out.println (num2+ "," +num1+ "," +num3 ");

//  }

}else if (max

max=num2;

if (max>num3) {

if (num1>num3) {

System.out.println (num3+ "," +num1+ "," +num2 ");

}else{

System.out.println (num1+ "," +num3+ "," +num2 ");

//             }

}else{

System.out.println (num1+ "," +num2+ "," +num3 ");

// }

// }

int temp;

if (num1>num2) {

temp=num2;

NUM2=NUM1;

Num1=temp;

}

if (num1>num3) {

TEMP=NUM3;

NUM3=NUM1;

Num1=temp;

}

if (num2>num3) {

TEMP=NUM3;

num3=num2;

Num2=temp;

}

System.out.println (num1+ "," +num2+ "," +num3 ");

}

}

7. Let the user enter a number between 1-9999 (if the input error, prompt error), reverse output the user input number.

Import Java.util.Scanner;

public class Problem7 {

public static void Main (string[] args) {

Scanner scan = new Scanner (system.in);

System.out.println ("Please enter a number of 1-9999");

int number = Scan.nextint ();

int GE = number% 10;

int shi = number/10% 10;

int bai = number/100% 10;

int qian = number/1000% 10;

if (number <= 0) {

SYSTEM.OUT.PRINTLN ("You entered the error");

} else if (number < 10) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + ge);

} else if (number < 100) {

if (ge = = 0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + shi);

} else {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + ge + shi);

}

} else if (number < 1000) {

if (ge = = 0&&shi==0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" +bai);

} else if (ge==0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + Shi + bai);

}else{

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + ge + shi + bai);

}

} else if (number < 10000) {

if (ge = = 0&&shi==0&&bai==0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + qian);

} else if (ge==0&&shi==0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + Bai + Qian);

}else if (ge==0) {

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + Shi+bai + qian);

}else{

SYSTEM.OUT.PRINTLN ("Reverse output Result:" + Ge+shi+bai + qian);

}

} else {

SYSTEM.OUT.PRINTLN ("You entered the error");

}

}

}

8. Let the user enter a 5-digit number, determine whether it is a palindrome number, output judgment results.

Palindrome Number: If 12321 is a palindrome number, million is the same as the digit, 10 bits and thousands of the same.

Import Java.util.Scanner;

public class Problem8 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.println ("Please enter a five-digit number");

int Num=scan.nextint ();

int ge=num;

int SHI=NUM/10;

int bai=num/100;

int qian=num/1000;

int wan=num/10000;

if (num<10000| | num>=100000) {

System.out.println ("The number you entered is incorrect");

}else{

if (Ge==wan&&shi==qian) {

System.out.println ("The number is a palindrome number");

}else{

System.out.println ("The number is not a palindrome number");

}

}

}

}

10. The bonus awarded by the Enterprise is based on the profit percentage. Profit (I) less than or equal to $100,000, the bonus can be raised by 10%, the profit is higher than $100,000, less than $200,000, less than 100,000 of the portion of the 10% commission, higher than the portion of 100,000 yuan, Cocoa Commission 7.5%, 200,000 to 400,000, higher than 200,000 yuan of the portion, can commission 5% ; Between 400,000 and 600,000 is higher than the portion of 400,000 yuan, can commission 3%, 600,000 to 1 million, higher than 600,000 yuan portion, can commission 1.5%, higher than 1 million yuan, the portion of more than 1 million yuan by 1% Commission, from the keyboard input month profit I, the total bonus should be issued?

Import Java.util.Scanner;

public class PROBLEM10 {

public static void Main (string[] args) {

Scanner scan=new Scanner (system.in);

System.out.println ("Please enter profit I (unit: million)");

int I=scan.nextint ();

Double bonus,bonus10,bonus20,bonus40,bonus60,bonus100,bonusout100;

bonus10=10*0.1;

bonus20=bonus10+10*0.075;

bonus40=bonus20+20*0.05;

bonus60=bonus40+20*0.03;

bonus100=bonus60+40*0.015;

if (i*10000<=100000) {

bonus=i*0.1;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}else if (i*10000<=200000) {

bonus=bonus10+ (I-10) *0.075;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}else if (i*10000<=400000) {

bonus=bonus20+ (I-20) *0.05;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}else if (i*10000<=600000) {

bonus=bonus40+ (I-40) *0.03;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}else if (i*10000<=1000000) {

bonus=bonus60+ (I-60) *0.015;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}else{

bonus=bonus100+ (I-100) *0.01;

SYSTEM.OUT.PRINTLN ("Total bonus payable:" +bonus+ "million");

}

}

}

Java Fundamentals 03