Closed letientai299 closed 7 years ago
1.
public class Test {
public static void main(String[] args) {
System.out.print("Hello \n"+"Alexandra Abramov");
}
}
Your name, not their name. But this solution is ok, anyways.
2.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert 1st Number");
int a = sc.nextInt();
System.out.println("Please Insert 2nd Number");
int b = sc.nextInt();
System.out.println(a + b);
}
}
3.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert 1st Number");
int a = sc.nextInt();
System.out.println("Please Insert 2nd Number");
int b = sc.nextInt();
System.out.println(a / b);
}
}
4.
public class Test {
public static void main(String[] args) {
System.out.println(-5+8*6);
System.out.println((55+9) % 9 );
System.out.println(20 + -3*5 / 8);
System.out.println(5 + 15 / 3 * 2 - 8 % 3);
}
}
5.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert 1st Number");
int a = sc.nextInt();
System.out.println("Please Insert 2nd Number");
int b = sc.nextInt();
System.out.println(a + " * " + b + " = " + a * b);
}
}
Please optimize your usage of printf
in the ex-5
6.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert 1st Number");
int a = sc.nextInt();
System.out.println("Please Insert 2nd Number");
int b = sc.nextInt();
System.out.println(a + " + " + b + " = " + a + b);
System.out.println(a + " - " + b + " = " + a - b);
System.out.println(a + " * " + b + " = " + a * b);
System.out.println(a + " / " + b + " = " + a / b);
System.out.println(a + " mod " + b + " = " + a % b);
}
}
7
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert a Number");
int number = sc.nextInt();
for (int i = 0; i <= 10; i++) {
System.out.println(number + "*" + i + " = " + number * i);
}
}
}
8.
public class Test {
public static void main(String[] args) {
System.out.println(" J a v v a ");
System.out.println(" J a a v v a a");
System.out.println("J J aaaaa V V aaaaa");
System.out.println(" JJ a a V a a");
}
}
9.
public class Test {
public static void main(String[] args) {
System.out.println((25.5 * 3.5 - 3.5 * 3.5) / (40.5 - 4.5));
}
}
10.
public class Test {
public static void main(String[] args) {
System.out.println((4.0 * (1 - (1.0/3) + (1.0/5) - (1.0/7) + (1.0/9) - (1.0/11))));
}
}
11.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Radius Of Circle");
Scanner sc = new Scanner(System.in);
float radius = sc.nextFloat();
System.out.println("Perimeter is = " + radius * 2 * Math.PI);
System.out.println("Area is = " + radius * radius * Math.PI);
}
}
Wrong exercie order. Your 12th solution should belong to ex 11. And your 11th solution is incomplete.
wrong copy ,sorry -_-
13.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Width");
Scanner sc = new Scanner(System.in);
float Width = sc.nextFloat();
System.out.println("Please Insert Height");
float Height = sc.nextFloat();
System.out.println("Perimeter Of Rectangle = " + (Width + Height) / 2);
System.out.println("Area Of Rectangle = " + Width * Height);
}
}
12.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert 1st Number");
Scanner sc = new Scanner(System.in);
double number1 = sc.nextFloat();
System.out.println("Please Insert 2nd Number");
double number2 = sc.nextFloat();
System.out.println("Please Insert 3rd Number");
double number3 = sc.nextFloat();
System.out.println("Average Of The Numbers : " + (number1 + number2 + number3) / 3);
}
}
14.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("* * * * * * ==================================");
System.out.println(" * * * * * ==================================");
System.out.println("* * * * * * ==================================");
System.out.println(" * * * * * ==================================");
System.out.println("* * * * * * ==================================");
System.out.println(" * * * * * ==================================");
System.out.println("* * * * * * ==================================");
System.out.println(" * * * * * ==================================");
System.out.println("* * * * * * ==================================");
System.out.println("==============================================");
System.out.println("==============================================");
System.out.println("==============================================");
System.out.println("==============================================");
System.out.println("==============================================");
System.out.println("==============================================");
}
}
15.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Insert 1st Number");
int number1 = sc.nextInt();
System.out.println("Please Insert 2nd Number");
int number2 = sc.nextInt();
int swap=0;
System.out.println("1st and 2nd Number before swap "+number1+" , "+number2);
swap=number1;
number1=number2;
number2=swap;
System.out.println("1st and 2nd Number after swap "+number1+" , "+number2);
}
}
16.
public class Test {
public static void main(String[] args) {
System.out.println(" +\"\"\"\"\"+ ");
System.out.println("[| o o |]");
System.out.println(" | ^ | ");
System.out.println(" | '-' | ");
System.out.println(" +-----+ ");
}
}
17.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert 1st Binary Number");
Scanner sc = new Scanner(System.in);
String number1 = sc.nextLine();
System.out.println("Please Insert 2nd Binary ");
String number2 = sc.nextLine();
int sum = parseInt(number1, 2) + parseInt(number2, 2);
String sumbinary = Integer.toBinaryString(sum);
System.out.println(sumbinary);
}
}
18.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert 1st Binary Number");
Scanner sc = new Scanner(System.in);
String number1 = sc.nextLine();
System.out.println("Please Insert 2nd Binary ");
String number2 = sc.nextLine();
int sum = parseInt(number1, 2) * parseInt(number2, 2);
String sumbinary = Integer.toBinaryString(sum);
System.out.println(sumbinary);
}
}
19.
public static void main(String[] args) {
System.out.println("Please Insert Int Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
System.out.println(Integer.toBinaryString(number));
}
17, 18, 19. Do you know that there's a function Integer.parseInt(String s, int radix).
Thanks for your help,i ll try it.
20.
import java.util.Scanner;
import static java.lang.Integer.toHexString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert int Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
System.out.println(toHexString(number));
}
}
21
import java.util.Scanner;
import static java.lang.Integer.toOctalString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert int Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
System.out.println(toOctalString(number));
}
}
22.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Binary Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
number= parseInt(Integer.toString(number),2);
System.out.println(number);
}
}
23.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toHexString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Binary Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 2);
System.out.println(toHexString(number));
}
}
24.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toOctalString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Binary Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 2);
System.out.println(toOctalString(number));
}
}
25.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Octal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 8);
System.out.println(number);
}
}
26.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toBinaryString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Octal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 8);
System.out.println(toBinaryString(number));
}
}
27.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toHexString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Octal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 8);
System.out.println(toHexString(number));
}
}
28.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Hexadecximal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 16);
System.out.println(number);
}
}
29.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toBinaryString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Hexadecximal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 16);
System.out.println(toBinaryString(number));
}
}
30.
import java.util.Scanner;
import static java.lang.Integer.parseInt;
import static java.lang.Integer.toOctalString;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Hexadecximal Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
Integer.toString(number);
number = parseInt(Integer.toString(number), 16);
System.out.println(toOctalString(number));
}
}
31.
public class Test {
public static void main(String[] args) {
System.out.println("\nJava Version: " + System.getProperty("java.version"));
System.out.println("Java Runtime Version: " + System.getProperty("java.runtime.version"));
System.out.println("Java Home: " + System.getProperty("java.home"));
System.out.println("Java Vendor: " + System.getProperty("java.vendor"));
System.out.println("Java Vendor URL: " + System.getProperty("java.vendor.url"));
System.out.println("Java Class Path: " + System.getProperty("java.class.path") + "\n");
}
}
32.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert 1st Number");
Scanner sc = new Scanner(System.in);
int number1 = sc.nextInt();
System.out.println("Please Insert 2nd Number ");
int number2 = sc.nextInt();
if (number1 == number2) {
System.out.println(number1 + " = " + number2);
} else {
System.out.println(number1 + " != " + number2);
}
if (number1 > number2) {
System.out.println(number1 + " > " + number2);
System.out.println(number1 + " >= " + number2);
}
if (number1 < number2) {
System.out.println(number1 + " < " + number2);
System.out.println(number1 + " <= " + number2);
}
}
}
33.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Insert Number");
Scanner sc = new Scanner(System.in);
int number = sc.nextInt();
int sum = 0;
while (number > 0) {
sum = sum + number % 10;
number = number / 10;
}
System.out.println("The sum of the digits is: "+sum);
}
}
34.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Input the length of a side of the hexagon");
Scanner sc = new Scanner(System.in);
double number = sc.nextDouble();
System.out.println(
"The area of the hexagon is: " + (6 * number * number) / (4 * Math.tan(Math.PI / 6)));
}
}
35.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Please Input the number of sides on the polygon: ");
double numberSide = sc.nextDouble();
System.out.println("Please Input the length of one of the sides: ");
double numberLenght = sc.nextDouble();
System.out.println(
"The area is : " + (numberSide * numberLenght * numberLenght) / (4 * Math.tan(
Math.PI / numberSide)));
}
}
36.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
double lat1, lat2, long1, long2;
System.out.println("Input the latitude of coordinate 1 :");
double latitude1 = sc.nextDouble();
lat1 = Math.toRadians(latitude1);
System.out.println("Input the longitude of coordinate 1");
double longitude1 = sc.nextDouble();
long1 = Math.toRadians(longitude1);
System.out.println("Input the latitude of coordinate 2 :");
double latitude2 = sc.nextDouble();
lat2 = Math.toRadians(latitude2);
System.out.println("Input the latitude of coordinate 2 :");
double longitude2 = sc.nextDouble();
long2 = Math.toRadians(longitude2);
double d = 6371.01 * Math.acos(
Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos(
long1 - long2));
System.out.println(
"The distance between those points is:" + d);
}
}
38.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Input a String");
Scanner sc = new Scanner(System.in);
String text = sc.nextLine();
char[] textArray = text.toCharArray();
int letter = 0;
int space = 0;
int num = 0;
int other = 0;
for (int i = 0; i < text.length(); i++) {
if (Character.isLetter(textArray[i])) {
letter++;
} else if (Character.isDigit(textArray[i])) {
num++;
} else if (Character.isSpaceChar(textArray[i])) {
space++;
} else {
other++;
}
}
System.out.println("The string is : " +text);
System.out.println("letter: " + letter);
System.out.println("space: " + space);
System.out.println("number: " + num);
System.out.println("other: " + other);
}
}
I'm on my way.
37.
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
System.out.println("Please Input a String");
Scanner sc = new Scanner(System.in);
String text = sc.nextLine();
char[] textArray = text.toCharArray();
System.out.println("Reverse string: ");
for (int i = textArray.length - 1; i >= 0; i--) {
System.out.print(textArray[i]);
}
}
}
39.
public class Test {
public static void main(String[] args) {
int count = 0;
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <= 4; j++) {
for (int k = 1; k <= 4; k++) {
if (k != i && k != j && i != j) {
count++;
System.out.println(i + "" + j + "" + k);
}
}
}
}
System.out.println("Total number of the three-digit-number is " + count);
}
}
40.
import java.nio.charset.Charset;
public class Test {
public static void main(String[] args) {
System.out.println("List of available character sets: ");
for (String result : Charset.availableCharsets().keySet()) {
System.out.println(result);
}
}
}
43.
public class Test {
public static void main(String[] args) {
System.out.println("Twinkle, twinkle, little star,\n"
+ "\tHow I wonder what you are! \n"
+ "\t\tUp above the world so high, \t\t\n"
+ "\t\tLike a diamond in the sky. \n"
+ "Twinkle, twinkle, little star, \n"
+ "\tHow I wonder what you are\n");
}
}
41.
public class Test {
public static void main(String[] String) {
int chr = 'Z';
System.out.println("The ASCII value of Z is :" + chr);
}
}
44.
import java.util.Scanner;
public class Test {
public static void main(String[] String) {
System.out.println("Please Insert N");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
System.out.printf("%d + %d%d + %d%d%d ", n, n, n, n, n, n);
}
}
http://www.w3resource.com/java-exercises/basic/index.php
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