1주차 Assignment - 강두오

kangduoh/first-java-assignment/.gitignore

@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

kangduoh/first-java-assignment/first-java-assignment.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

kangduoh/first-java-assignment/src/assigns/Test1.java

@@ -0,0 +1,82 @@
+package assigns;
+
+// 다음 조건을 만족하도록 Cylinder 클래스를 작성합니다.
+class Cylinder {
+    // 원주율 3.14를 정적 상수 PI로 선언과 동시에 초기화
+    private static final double PI = 3.14;
+    // 정수형 원의 중심 좌표 x, y를 선언
+    private int x, y;
+    // 실수형 원의 반지름 r을 선언
+    private double r;
+    // 정수형 원기둥의 높이 height를 10으로 선언과 동시에 초기화
+    private int height = 10;
+
+    // 생성자1: 정수 인자 x, y 와 실수 인자 r을 전달 받아서 해당 필드 값을 초기화
+    Cylinder(int x, int y, double r) {
+        this.x = x;
+        this.y = y;
+        this.r = r;
+    }
+
+    // 생성자1: 정수 인자 x, y, height 와 실수 인자 r을 전달 받아서 해당 필드 값을 초기화
+    Cylinder(int x, int y, double r, int height) {
+        this.x = x;
+        this.y = y;
+        this.r = r;
+        this.height = height;
+    }
+
+    // circleArea 메서드: PI를 이용하여 원의 면적 반환
+    public double circleArea() {
+        return PI * Math.pow(r, 2);
+    }
+
+    // volume 메서드: 면적과 높이를 이용하여 부피를 반환
+    public double volume() {
+        return this.circleArea() * height;
+    }
+
+    // surfaceArea 메서드: PI를 이용하여 원기둥의 겉넓이를 반환
+    public double surfaceArea() {
+        return 2 * PI * r * (r + height);
+    }
+
+    // move 메서드: 정수 인자 dx, dy를 전달 받아서 원의 중심 좌표를 이동
+    // - 예: 필드 x가 1이고 dx가 10이면 x는 11로 변경되어야 함
+    // 객체 자신을 반환
+    public Cylinder move(int dx, int dy) {
+        this.x += dx;
+        this.y += dy;
+        return this;
+    }
+
+    void print() {
+        System.out.println("<" + x + "," + y + ":" + r + ">");
+    }
+}
+
+
+// 메인메서드 수행시 이렇게 출력되도록
+//<13,15:6.0>
+//113.04
+//1130.4
+//602.88
+//<17,25:10.0>
+//314.0
+//1570.0
+//942.0
+public class Test1 {
+    public static void main(String[] args) {
+        Cylinder c1 = new Cylinder(3,5, 6);
+        c1.move(10,10).print();
+        System.out.println(c1.circleArea());
+        System.out.println(c1.volume());
+        System.out.println(c1.surfaceArea());
+
+        Cylinder c2 = new Cylinder(5,8, 10, 5);
+        c2.move(12,17).print();
+        System.out.println(c2.circleArea());
+        System.out.println(c2.volume());
+        System.out.println((float) c2.surfaceArea());
+    }
+}

kangduoh/first-java-assignment/src/bj_10810/Main.java

@@ -0,0 +1,35 @@
+package bj_10810;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int N = Integer.parseInt(st.nextToken());
+        int M = Integer.parseInt(st.nextToken());
+
+        int[] basket = new int[N];
+
+        for (int l = 0; l < M; l++) {
+            st = new StringTokenizer(br.readLine());
+            int i = Integer.parseInt(st.nextToken());
+            int j = Integer.parseInt(st.nextToken());
+            int k = Integer.parseInt(st.nextToken());
+
+            for (int idx = i - 1; idx < j; idx++)
+                basket[idx] = k;
+        }
+
+        for (int l = 0; l < N; l++)
+            sb.append(basket[l]).append(' ');
+
+        System.out.println(sb);
+        br.close();
+    }
+}

kangduoh/first-java-assignment/src/bj_11021/Main.java

@@ -0,0 +1,28 @@
+package bj_11021;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        int T = Integer.parseInt(br.readLine());
+        StringTokenizer st = null;
+        int a, b;
+
+        for (int i = 1; i <= T; i++) {
+            st = new StringTokenizer(br.readLine());
+            a = Integer.parseInt(st.nextToken());
+            b = Integer.parseInt(st.nextToken());
+
+            sb.append("Case #").append(i).append(": ").append(a + b).append('\n');
+        }
+
+        System.out.println(sb);
+        br.close();
+    }
+}

kangduoh/first-java-assignment/src/bj_2439/Main.java

@@ -0,0 +1,27 @@
+package bj_2439;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        int N = Integer.parseInt(br.readLine());
+
+        for (int i = 0; i < N; i++) {
+            for (int j = 0; j < N - i - 1; j++)
+                sb.append(' ');
+
+            for (int k = 0; k <= i; k++)
+                sb.append('*');
+
+            sb.append('\n');
+        }
+
+        System.out.println(sb);
+        br.close();
+    }
+}

kangduoh/first-java-assignment/src/bj_2588/Main.java

@@ -0,0 +1,23 @@
+package bj_2588;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        int num1 = Integer.parseInt(br.readLine());
+        int num2 = Integer.parseInt(br.readLine());
+
+        sb.append(num1 * (num2 % 10)).append('\n');
+        sb.append(num1 * (num2 / 10 % 10)).append('\n');
+        sb.append(num1 * (num2 / 100)).append('\n');
+        sb.append(num1 * num2);
+
+        System.out.println(sb);
+        br.close();
+    }
+}

kangduoh/first-java-assignment/src/bj_2884/Main.java

@@ -0,0 +1,28 @@
+package bj_2884;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int h = Integer.parseInt(st.nextToken());
+        int m = Integer.parseInt(st.nextToken());
+
+        if (m < 45) {
+            h = (h + 23) % 24;
+            m += 15;
+        }
+        else
+            m -= 45;
+
+        sb.append(h).append(' ').append(m);
+        System.out.println(sb);
+        br.close();
+    }
+}

kangduoh/first-java-assignment/src/bj_9086/Main.java

@@ -0,0 +1,23 @@
+package bj_9086;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+
+        int T = Integer.parseInt(br.readLine());
+        String in;
+
+        for (int i = 0; i < T; i++) {
+            in = br.readLine();
+            sb.append(in.charAt(0)).append(in.charAt(in.length() - 1)).append('\n');
+        }
+
+        System.out.println(sb);
+        br.close();
+    }
+}