10/19

Question07-Array/.classpath

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
+	<classpathentry kind="src" path="src/main/java"/>
+	<classpathentry kind="output" path="build/classes"/>
+</classpath>

Question07-Array/.gitignore

@@ -0,0 +1 @@
+/build/

Question07-Array/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question07-Array</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

Question07-Array/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
+org.eclipse.jdt.core.compiler.compliance=21
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

Question07-Array/.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="21"/>
+</faceted-project>

Question07-Array/src/main/java/Question7_1.java

@@ -0,0 +1,17 @@
+
+public class Question7_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		int[] num = new int[5];
+
+		num[0] = 1;
+		num[1] = 3;
+		num[2] = 5;
+		num[3] = 7;
+		num[4] = 9;
+
+		System.out.println(num[1]);
+	}
+
+}

Question07-Array/src/main/java/Question7_10.java

@@ -0,0 +1,17 @@
+
+public class Question7_10 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        int[] numbers = new int[100];
+
+        //格納
+        for (int i = 0; i < numbers.length; i++) {
+            numbers[i] = i + 1;
+        }
+        //出力
+        for (int i = 0; i < numbers.length; i++) {
+            System.out.println(numbers[i]);
+        }
+    }
+}

Question07-Array/src/main/java/Question7_2.java

@@ -0,0 +1,9 @@
+
+public class Question7_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        int[] num = {1, 10, 100};
+        System.out.println(num[0] + num[2]);
+    }
+}

Question07-Array/src/main/java/Question7_3.java

@@ -0,0 +1,11 @@
+
+public class Question7_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        String[] places = {"森", "山", "沼", "島", "平地"};
+        for (int i = 0; i < places.length; i++) {
+            System.out.println(places[i]);
+        }
+    }
+}

Question07-Array/src/main/java/Question7_4.java

@@ -0,0 +1,16 @@
+
+public class Question7_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        int[] num = new int[1000];
+
+        for (int i = 0; i < num.length; i++) {
+            num[i] = i + 1;
+        }
+
+        for (int i = 0; i < num.length; i++) {
+            System.out.println(num[i]);
+        }
+    }
+}

Question07-Array/src/main/java/Question7_5.java

@@ -0,0 +1,10 @@
+
+public class Question7_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        String[] places = {"森", "山", "沼", "島", "平地"};
+        int index = (int)(Math.random() * 5);
+        System.out.println(places[index]);
+    }
+}

Question07-Array/src/main/java/Question7_6.java

@@ -0,0 +1,11 @@
+
+public class Question7_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        String[] places = {"森", "山", "沼", "島", "平地"};
+        for (int i = places.length - 1; i >= 0; i--) {
+            System.out.println(places[i]);
+        }
+    }
+}

Question07-Array/src/main/java/Question7_7.java

@@ -0,0 +1,16 @@
+
+public class Question7_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        String[][] kyoka = {
+                {"国語", "社会", "国語", "理科", "社会"},
+                {"英語", "数学", "英語", "数学", "国語"},
+                {"理科", "国語", "理科", "国語", "理科"},
+                {"社会", "社会", "数学", "社会", "数学"},
+                {"数学", "英語", "英語", "理科", "英語"}
+            };
+
+            System.out.println(kyoka[1][4]);
+        }
+    }

Question07-Array/src/main/java/Question7_8.java

@@ -0,0 +1,17 @@
+
+public class Question7_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        int[][] numbers = {
+                {1, 3, 5, 7},
+                {11, 13, 17, 19, 23, 29}
+            };
+
+            for (int i = 0; i < numbers.length; i++) {
+                for (int j = 0; j < numbers[i].length; j++) {
+                    System.out.println(numbers[i][j]);
+                }
+            }
+        }
+    }

Question07-Array/src/main/java/Question7_9.java

@@ -0,0 +1,25 @@
+
+public class Question7_9 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+        int[][] numbers = {
+                {1, 3, 5, 7},
+                {11, 13, 17, 19, 23, 29}
+            };
+
+            int sum = 0;
+            int count = 0;
+
+            for (int i = 0; i < numbers.length; i++) {
+                for (int j = 0; j < numbers[i].length; j++) {
+                    sum += numbers[i][j];
+                    count++;
+                }
+            }
+
+            double average = (double) sum / count;
+
+            System.out.println(average);
+        }
+    }