Here is something I coded.
It is a simple home page coded by HTML.
Here is my diagram for this project.
It is a simple vending machine program with well document.
import java.util.Scanner;
public class IsBillPaid {
public static void main(String[] args) {
int goodsNO[][] = new int[3][4];//自販機の商品リストを作成
goodsNO[0][0] = 1;
goodsNO[0][1] = 100;
goodsNO[0][2] = 500;
goodsNO[0][3] = 1000;
goodsNO[1][0] = 5000;
goodsNO[1][1] = 10000;
//自販機の商品値段を指定
Scanner sc = new Scanner(System.in);
int row = -1;
int column = -1;
while (true) {
System.out.print("商品番号の行番号入力：");
row = sc.nextInt();
if (row < goodsNO.length) {//入力問題ないでしたら
break;
} else {
System.out.print("番号がない、やり直してください！");
//エラーメッセージを提示、入力再度リクエスト
}
}
while (true) {
System.out.print("商品番号の列番号入力：");
column = sc.nextInt();
if (column < goodsNO[0].length) {//入力問題ないでしたら
break;
} else {
System.out.print("番号がない、やり直してください！");
//エラーメッセージを提示、入力再度リクエスト
}
}
System.out.println("あなたの選んだ商品番号は：" + row + " " + column);
int price = goodsNO[row][column];
System.out.println(goodsNO[row][column] + "円を投入してください。");
System.out.print("お支払い金額入力：");
int money = sc.nextInt();
if (price > money) {
System.out.print("購入失敗");
} else if (price == money) {
System.out.print("購入完了、お釣りなし");
} else {
int change = money - price;
System.out.println("購入完了、お釣りは" + change + "円");
if (change >= 5000) {
System.out.println("五千円札" + change / 5000 + "枚");
change %= 5000;
}
if (change >= 1000) {
System.out.println("千円札" + change / 1000 + "枚");
change %= 1000;
}
if (change >= 500) {
System.out.println("500円コイン" + change / 500 + "枚");
change %= 500;
}
if (change >= 100) {
System.out.println("100円コイン" + change / 100 + "枚");
change %= 100;
}
if (change >= 50) {
System.out.println("50円コイン" + change / 50 + "枚");
change %= 50;
}
if (change >= 10) {
System.out.println("10円コイン" + change / 10 + "枚");
change %= 10;
}
if (change >= 5) {
System.out.println("5円コイン" + change / 5 + "枚");
change %= 5;
}
if (change >= 1) {
System.out.println("1円コイン" + change + "枚");
}
}
sc.close();
}
}
}
}It is a simple program to count the number of elements in a 3D array.
Also well documented. Free to copy and test on your desktop.
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
public class LoopTest {
public static void main(String[] args) {
Random rand = new Random();
//乱数クリエイターを作る
int xSize = rand.nextInt(9) + 1, ySize = rand.nextInt(9) + 1, zSize = rand.nextInt(9) + 1;
//先に、3D配列のサイズを変数で指定する；
System.out.println(String.format("[%d][%d][%d]", xSize, ySize, zSize));
long[][][] array3D = new long[xSize][ySize][zSize];
//長整数型三次元配列array3Dを宣言する。
//その長さは、先に宣言した変数で決める。
for (int x = 0; x < xSize; x++) {
for (int y = 0; y < ySize; y++) {
for (int z = 0; z < zSize; z++) {
//或る０から始まる変数ｘｙｚを
array3D[x][y][z] //3D配列array3Dのインデックスに代入する
= rand.nextInt(1000); // 0〜999 のランダム
}
}
}
long max = Long.MIN_VALUE;
String maxIndex = "";
for (int counterX = 0; counterX < array3D.length; counterX++) {//
for (int counterY = 0; counterY < array3D[0].length; counterY++) {
for (int counterZ = 0; counterZ < array3D[0][0].length; counterZ++) {
if (array3D[counterX][counterY][counterZ] > max) {
max = array3D[counterX][counterY][counterZ];
maxIndex = String.format("[%d][%d][%d]", counterX, counterY, counterZ);
}
System.out.println("[" + counterX + "][" + counterY + "][" + counterZ + "] = "
+ array3D[counterX][counterY][counterZ]);
}
}
}
System.out.println("最大値は" + maxIndex + "にいる" + max + "です。");
System.out.println('\n' + "拡張forで再検証：\n");
long maxCheck = Long.MIN_VALUE;
String currentIndex = "";
String maxIndexCheck = "";
int counterXCheck = 0, counterYCheck = 0, counterZCheck = 0;
for (long[][] array2D : array3D) {
for (long[] array1D : array2D) {
for (long arrayElement : array1D) {
currentIndex = String.format("[%d][%d][%d]", counterXCheck, counterYCheck, counterZCheck);
System.out.print(currentIndex);
System.out.println(" = " + arrayElement);
counterZCheck++;
if (counterZCheck == (int) array3D[counterXCheck][counterYCheck].length) {
counterZCheck = 0;
counterYCheck++;
if (counterYCheck == (int) array3D[counterXCheck].length) {
counterYCheck = 0;
counterXCheck++;
if (counterXCheck == (int) array3D.length) {
counterXCheck = 0;
}
}
}
if (arrayElement > maxCheck) {
maxCheck = arrayElement;
maxIndexCheck = currentIndex;
}
}
}
}
System.out.println('\n' + "拡張forで再検証の最大値は" + maxIndexCheck + "にいる" + maxCheck + "です。");
// 正确构造 List>>
List>> list3D = new ArrayList<>();
for (long[][] array2D : array3D) {
List> list2D = new ArrayList<>();
for (long[] array1D : array2D) {
List list1D = new ArrayList<>();
for (long element : array1D) {
list1D.add((int) element);
}
list2D.add(list1D);
}
list3D.add(list2D);
}
long maxAL = Long.MIN_VALUE;
String maxALIndex = "";
for (int x = 0; x < list3D.size(); x++) {
for (int y = 0; y < list3D.get(x).size(); y++) {
for (int z = 0; z < list3D.get(x).get(y).size(); z++) {
int val = list3D.get(x).get(y).get(z);
if (val > maxAL) {
maxAL = val;
maxALIndex = String.format("[%d][%d][%d]", x, y, z);
}
System.out.println("[" + x + "][" + y + "][" + z + "] = " + val);
}
}
}
System.out.println("ArrayListで最大値は" + maxALIndex + "にいる" + maxAL + "です。");
List>> link3D = new LinkedList<>();
long maxLL = Long.MIN_VALUE;
for (long[][] array2D : array3D) {
List> link2D = new LinkedList<>();
for (long[] array1D : array2D) {
List link1D = new LinkedList<>();
for (long arrayEle : array1D) {
link1D.add(arrayEle);
}
for (long Temp :link1D) {
if(Temp>maxLL) {maxLL=Temp;}
}
link2D.add(link1D);
}
link3D.add(link2D);
}
System.out.println("LinkedListで最大値は" + maxLL + "です。");
}
}