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dluganodlugano
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chap 12
Chapter code and exercises through chapter 12
1 parent 3aed00b commit 02c8171

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Lines changed: 695 additions & 100 deletions

‎.vscode/launch.json‎

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@@ -2,106 +2,45 @@
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"configurations": [
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{
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"type": "java",
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"name": "CodeLens (Launch) - Tables",
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"name": "CodeLens (Launch) - encap",
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"request": "launch",
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"mainClass": "Tables",
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"mainClass": "encap",
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"projectName": "ThinkJavaCode_bf076222"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Loops",
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"name": "CodeLens (Launch) - Format",
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"request": "launch",
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"mainClass": "Loops",
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"mainClass": "Format",
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"projectName": "ThinkJavaCode_bf076222"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Multadd",
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"name": "CodeLens (Launch) - ArrayExamples",
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"request": "launch",
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"mainClass": "Multadd",
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"mainClass": "ArrayExamples",
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"projectName": "ThinkJavaCode_bf076222"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - testing",
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"name": "CodeLens (Launch) - math",
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"request": "launch",
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"mainClass": "testing",
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"mainClass": "math",
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"projectName": "ThinkJavaCode_bf076222"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Exercise",
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"request": "launch",
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"mainClass": "Exercise"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Series",
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"request": "launch",
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"mainClass": "Series"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Recursive",
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"request": "launch",
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"mainClass": "Recursive"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Buzz",
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"request": "launch",
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"mainClass": "Buzz"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - CheckFermat",
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"request": "launch",
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"mainClass": "CheckFermat"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - GuessStarter",
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"request": "launch",
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"mainClass": "GuessStarter",
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"console": "integratedTerminal"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Temp",
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"request": "launch",
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"mainClass": "Temp",
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"console": "integratedTerminal"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Echo",
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"request": "launch",
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"mainClass": "Echo"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Convert",
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"request": "launch",
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"mainClass": "Convert",
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"console": "integratedTerminal"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Time",
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"request": "launch",
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"mainClass": "Time"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Date",
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"request": "launch",
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"mainClass": "Date"
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"mainClass": "Exercise",
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"projectName": "ThinkJavaCode_bf076222"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Hello",
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"name": "CodeLens (Launch) - Tables",
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"request": "launch",
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"mainClass": "Hello"
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"mainClass": "Tables",
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"projectName": "ThinkJavaCode_bf076222"
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}
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]
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}

‎ap02/.vscode/launch.json‎

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{
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"configurations": [
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{
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"type": "java",
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"name": "CodeLens (Launch) - Moire",
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"request": "launch",
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"mainClass": "Moire"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Mickey",
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"request": "launch",
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"mainClass": "Mickey"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - japan",
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"request": "launch",
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"mainClass": "japan"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Drawing",
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"request": "launch",
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"mainClass": "Drawing"
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}
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]
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}

‎ap02/Mickey.java‎

Lines changed: 10 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -30,13 +30,18 @@ public void mickey(Graphics g, Rectangle bb) {
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int dx = bb.width / 2;
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int dy = bb.height / 2;
33-
Rectangle half = new Rectangle(bb.x, bb.y, dx, dy);
33+
if (dx > 3) {
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Rectangle half = new Rectangle(bb.x, bb.y, dx, dy);
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35-
half.translate(-dx / 2, -dy / 2);
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boxOval(g, half);
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half.translate(-dx / 2, -dy / 2);
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mickey(g, half);
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half.translate(dx * 2, 0);
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boxOval(g, half);
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half.translate(dx * 2, 0);
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mickey(g, half);
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dx /= 2;
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dy /= 2;
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}
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}
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}

‎ap02/Moire.java‎

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Original file line numberDiff line numberDiff line change
@@ -16,11 +16,25 @@ public static void main(String[] args) {
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}
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public void paint(Graphics g) {
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int i = 90;
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while (i < getWidth()) {
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g.drawOval(0, 0, i, i);
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i = i + 3;
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// int i = 90;
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// while (i < getWidth()) {
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// g.drawOval(getWidth() / 2 - i / 2, getHeight() / 2 - i / 2, i, i);
22+
// i = i + 3;
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// }
24+
radial(g);
25+
}
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27+
public void radial(Graphics g) {
28+
int i = 0;
29+
int j = 0;
30+
while (i <= getWidth() && j <= getHeight()) {
31+
g.drawLine(i, 0, getWidth() - i, getHeight());
32+
g.drawLine(0, j, getWidth(), getHeight() - j);
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i = i + 5;
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j = j + 5;
2335
}
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g.drawLine(0, getHeight(), getWidth(), 0);
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}
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}

‎ap02/japan.java‎

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import java.awt.Canvas;
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import java.awt.Color;
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import java.awt.Graphics;
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import javax.swing.JFrame;
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6+
7+
public class japan extends Canvas {
8+
9+
public static void main(String[] args) {
10+
JFrame frame = new JFrame("Flag of Japan");
11+
Canvas japan = new japan();
12+
japan.setSize(600, 400);
13+
frame.add(japan);
14+
frame.pack();
15+
frame.setVisible(true);
16+
}
17+
18+
public void paint(Graphics g) {
19+
g.setColor(Color.red);
20+
g.fillOval(175, 75, 250, 250);
21+
}
22+
}

‎ch07/math.java‎

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public static class math {
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3+
public static void main(String args[]) {
4+
System.out.println(SquareRoot(16));
5+
System.out.println(power(3,0));
6+
System.out.println(factorial(0));
7+
check(1.0);
8+
}
9+
10+
public static double SquareRoot(double a) {
11+
double x = a/2;
12+
double y = a;
13+
while (Math.abs(x - y) > 0.0001) {
14+
y = x;
15+
x = (x + a/x)/2;
16+
}
17+
return x;
18+
}
19+
20+
public static double power(double x, int n) {
21+
double x0 = 1;
22+
for (int i=0; i<n; i++) {
23+
x0*=x;
24+
}
25+
return x0;
26+
}
27+
public static int factorial(int n) {
28+
int m = 1;
29+
for (int i = n; i > 0; i--) {
30+
m = m * i;
31+
}
32+
return m;
33+
}
34+
35+
public static double myexp(double x, int n) {
36+
double e = 1.0;
37+
double j = 1.0;
38+
for (int i=1; i<n; i++) {
39+
//e = e + (power(x,i)/factorial(i));
40+
j *= (x/i);
41+
e += j;
42+
}
43+
return e;
44+
}
45+
46+
public static double gauss(double x, int n) {
47+
double j = 1;
48+
double y = 1.0;
49+
for (int i = 1; i < n; i++) {
50+
j *= (-x / i) * x;
51+
y += j;
52+
}
53+
return y;
54+
}
55+
56+
public static void check(double x) {
57+
System.out.print(x + "\t");
58+
System.out.print(myexp(x, 18)+"\t");
59+
System.out.println(Math.exp(x));
60+
}
61+
}

‎ch08/.vscode/launch.json‎

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{
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"configurations": [
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{
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"type": "java",
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"name": "CodeLens (Launch) - MakeDubMus",
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"request": "launch",
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"mainClass": "MakeDubMus"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - Histogram",
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"request": "launch",
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"mainClass": "Histogram"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - encap",
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"request": "launch",
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"mainClass": "encap"
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},
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{
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"type": "java",
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"name": "CodeLens (Launch) - ArrayExamples",
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"request": "launch",
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"mainClass": "ArrayExamples"
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}
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]
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}

‎ch08/Fruit.java‎

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Original file line numberDiff line numberDiff line change
@@ -3,8 +3,8 @@
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*/
44
public class Fruit {
55

6-
public static int banana(int[] a) {
7-
int kiwi = 1;
6+
public static int banana(int[] a) { //Takes product of all elements
7+
int kiwi = 1; // Final product of all list elements
88
int i = 0;
99
while (i < a.length) {
1010
kiwi = kiwi * a[i];
@@ -13,7 +13,7 @@ public static int banana(int[] a) {
1313
return kiwi;
1414
}
1515

16-
public static int grapefruit(int[] a, int grape) {
16+
public static int grapefruit(int[] a, int grape) { // Searches for grape in a
1717
for (int i = 0; i < a.length; i++) {
1818
if (a[i] == grape) {
1919
return i;
@@ -22,8 +22,8 @@ public static int grapefruit(int[] a, int grape) {
2222
return -1;
2323
}
2424

25-
public static int pineapple(int[] a, int apple) {
26-
int pear = 0;
25+
public static int pineapple(int[] a, int apple) { // Counts the number of times apple appears in a
26+
int pear = 0; // Total number of appearances of apple in a
2727
for (int pine: a) {
2828
if (pine == apple) {
2929
pear++;

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