best way to learn java programming

Monkey Eat Peach Problem: The first day the monkey took off a number of peaches, immediately ate half, not enjoyable, and ate one more, the next morning, the remaining peaches eaten half, but also eat one more. Every morning after eating the rest of the day half of the zero one. By the 10th morning when I wanted to eat again, there was only one peach left. Ask how many peaches were picked on the first day.public class Example17 {public static void Main (string[] args) {int sum = Peach (1);System

Please enter the first letter of the day of the week to determine the day of the week, if the first letter, then continue to judge the second letter.public class Example26 {public static void Main (string[] args) {f ();}public static void F () {System.out.println ("Please enter the first capital letter of the Week:");char ch = getChar ();Switch (CH) {Case ' M ':SYSTEM.OUT.PRINTLN ("The letter corresponds to the Monday. "); break;Case ' W ':SYSTEM.OUT.PRINTLN ("The letter corresponds to the Wedne

The number of primes within 100.public class Example27 {public static void Main (string[] args) {Prime ();}public static void prime () {System.out.print (2 + "\ T");System.out.print (3 + "\ T");int count = 2;Boolean flag = false;for (int i = 2; I for (int j = 2; J if (i% j = 0) {Flag = false;Break} else {Flag = true;}}if (flag) {count++;System.out.print (i + "t");if (count% 10 = = 0) {System.out.println ();}}}System.out.println ("\ n Total" + count + "number of primes.) ");}}

Print out the case (diamond)****************************public class Example19 {public static void Main (string[] args) {Display (5);}public static void display (int h) {for (int i = 0; I for (int j = 0; J System.out.print ("");}for (int k = 1; k System.out.print ("*");}System.out.println ();}for (int i = 1; I for (int j = 1; J System.out.print ("");}for (int j = 0; J System.out.print ("*");}System.out.println ();}}}Java Classic

Takes an integer a from the right end of the 4~7 bit.public class Example32 {public static void Main (string[] args) {Cut (123456789);}public static void Cut (long n) {String s = long.tostring (n);Char[] C = S.tochararray ();int j = C.length;if (J SYSTEM.OUT.PRINTLN ("Input Error! ");} else {System.out.println ("Intercept the 4~7 bit starting from the right side is:" + c[j-7] + c[j-6]+ c[j-5] + c[j-4]);}}}Java Classic

Write a function: When the input n is even, call the function to 1/2+1/4+...+1/n; When input n is odd, the function 1/1+1/3+...+1/n is called.public class Example38 {public static void Main (string[] args) {Double d = SUM (3);SYSTEM.OUT.PRINTLN ("The result of the operation is:" + D);}public static double sum (int n) {Double sum = 0.0;if (n% 2 = = 0) {for (int i = 2; I sum + = 1.0/i;}} else {for (int i = 1; I sum + = 1.0/i;}}return sum;}}Java Classic

An even number is always represented as a sum of two primes.public class Example43 {public static void Main (string[] args) {f ();}public static Boolean fun (int a) {Boolean flag = false;if (a = = 3) {Flag = true;return (flag);}for (int i = 2; I If (a% i = = 0) {Flag = false;Break} elseFlag = true;}return (flag);}public static void F () {Scanner s = new Scanner (system.in);int n, I;do {System.out.print ("Please enter an even number greater than or equal to 6:");n = s.nextint ();} while (N for (i

A company uses a public telephone to pass data, the data is a four-bit integer, is encrypted during delivery, encryption rules are as follows: Each digit is added 5, and then divided by the remainder of 10 instead of the number, and then the first and fourth exchange, the second and third exchange.public class Example48 {public static void Main (string[] args) {f (2345);}public static void f (int num) {Int[] C = new Int[4];if (num > 999 num C[0] = num/1000;C[1] = (num/100)% 10;C[2] = (NUM/10)%

There were a bunch of peaches on the beach and five monkeys. The first monkey divided the pile of peaches into five, and one more, and the monkey threw one more into the sea and took a copy. The second monkey divided the remaining peaches evenly into five pieces, and one more, it also threw a lot of one into the sea, took a copy. The third, the fifth and the other monkeys are doing so. Q. How many peaches do you have at least on the beach?public class Example41 {public static void Main (string[]

809*?? =800*?? +9*?? +1, where?? The two-digit number represented, 8*?? The result is a two-digit number, 9*?? The result is a 3-digit number. Please?? represent the double digits, and 809*?? After the result.public class Example42 {public static void Main (string[] args) {f ();}public static void F () {int a = 809, b, I;for (i = ten; I b = i * A;if (8 * I System.out.println ("\"?? \ "Representative:" + i);System.out.println ("809*" + i + "=" + "800*" + i + "+" + "9*"+ i + "=" + B);}}}}

There are n integers, so that they move backward in order of m positions, and the last m number becomes the first number of M.public class Example36 {public static void Main (string[] args) {Int[] m = {18, 12, 23, 34, 95, 76, 57, 28, 9};Moveelement (M, 5);}public static void Moveelement (int[] m, int n) {System.out.print ("The array before the shift is:");for (int r:m) {System.out.print (R + "");}if (n Int[] B = new Int[m.length];for (int i = 0; i B[i + N] = M[i];}int j = 0;for (int i = m.length

Reads an integer value of 7 numbers (1~50), and each time a value is read, the program prints the number of the value *.public class Example47 {public static void Main (string[] args) {Int[] A = {10, 7, 6, 15, 4, 3, 20};Display (a);}public static void display (int[] a) {System.out.print ("The integer Read is:");for (int r:a) {System.out.println (R + "");}for (int i = 0; i System.out.print ("print" + a[i] + "X *:");for (int j = 0; J System.out.print ("*");}System.out.println ();}}}

necessarily the language itself.(such as grammar syntax, etc.), but The whole idea of programming and the structure of programming。 As a matter of fact, the syntax and manipulation of the Python language you're learning, compared to languages such as C + + and Java, is for beginners. relatively simple to get started withThe Before you

Teenagers learn Java and other programming development courses is a stupid fashion [image]:This article only represents a different voice, does not represent the majority of people's opinion, let the children sit in front of the computer to tap the keyboard, master their parents dream skills. God, nothing is more desirable than to teach our children to write code