forked from mmcgrana/gobyexample
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy patharrays.html
200 lines (157 loc) · 10.1 KB
/
arrays.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Go by Example မြန်မာဘာသာ: Arrays</title>
<link rel=stylesheet href="site.css">
</head>
<script>
onkeydown = (e) => {
if (e.key == "ArrowLeft") {
window.location.href = 'switch';
}
if (e.key == "ArrowRight") {
window.location.href = 'slices';
}
}
</script>
<body>
<div class="example" id="arrays">
<h2><a href="./">Go by Example မြန်မာဘာသာ</a>: Arrays</h2>
<table>
<tr>
<td class="docs">
<p>Go မှာ <em>array</em> length ဘယ်လောက်ရှိလဲဆိုတာသတ်မှတ်ပေးရတယ်။
ပုံမှန် Go code တွေမှာ <a href="slices">slices</a> တွေကိုအသုံးပြုကြတာများတယ်။
တချို့ special scenarios တွေမှာဆို arrays ကိုအသုံးပြုကြတယ်။</p>
</td>
<td class="code empty leading">
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<a href="https://go.dev/play/p/rjhUuXgw8sc"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
<pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<pre class="chroma"><span class="kn">import</span> <span class="s">"fmt"</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<pre class="chroma"><span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>ဒီမှာကျနော်တို့ array <code>a</code> ကိုကြေငြာထားတယ်၊ အဲ့ array ထဲမှာ <code>int</code> 5 ခုရှိတယ်။
array ထဲမှာပါတဲ့ elements တွေရဲ့ type နဲ့ length ကတော့ array ရဲ့ type ဖြစ်ပါတယ်။
array ရဲ့ default value က 0 ပါ။ array ထဲမှာဘာမှသတ်မှတ်ထားတာမရှိဘူးဆိုရင်
default 0 တခါထဲထည့်ပေးလိုက်မှာပါ။</p>
</td>
<td class="code leading">
<pre class="chroma">
<span class="kd">var</span> <span class="nx">a</span> <span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="kt">int</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"emp:"</span><span class="p">,</span> <span class="nx">a</span><span class="p">)</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>ကျနော်တို့ array ကို array index နဲ့ထောက်ပီးတော့ value ထည့်ပေးလို့ရတယ်။
<code>array[index] = value</code> ဒီလို syntax ကိုသုံးပြီးတော့ value ထည့်ပေးလို့ရသလို
<code>array[index]</code> ဒီလို syntax ကိုသုံးပြီးတော့ value ကိုရှာနိုင်ပါတယ်။</p>
</td>
<td class="code leading">
<pre class="chroma">
<span class="nx">a</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span> <span class="p">=</span> <span class="mi">100</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"set:"</span><span class="p">,</span> <span class="nx">a</span><span class="p">)</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"get:"</span><span class="p">,</span> <span class="nx">a</span><span class="p">[</span><span class="mi">4</span><span class="p">])</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>builtin <code>len</code> ကတော့သိတဲ့အတိုင်း array ရဲ့ length ကိုရနိုင်ပါတယ်။</p>
</td>
<td class="code leading">
<pre class="chroma">
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"len:"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="nx">a</span><span class="p">))</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>ဒီ syntax ကိုသုံးပီးတော့ array ကို declare/initialize
တကြောင်းထဲနှင့်သတ်မှတ်နိုင်ပါတယ်။</p>
</td>
<td class="code leading">
<pre class="chroma">
<span class="nx">b</span> <span class="o">:=</span> <span class="p">[</span><span class="mi">5</span><span class="p">]</span><span class="kt">int</span><span class="p">{</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">}</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"dcl:"</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>Array type တွေက one-dimensional၊ ဒါပေမယ့် multi-dimensional
data structure တွေကိုလဲအသုံးပြုနိုင်ပါတယ်။</p>
</td>
<td class="code">
<pre class="chroma">
<span class="kd">var</span> <span class="nx">twoD</span> <span class="p">[</span><span class="mi">2</span><span class="p">][</span><span class="mi">3</span><span class="p">]</span><span class="kt">int</span>
<span class="k">for</span> <span class="nx">i</span> <span class="o">:=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="p"><</span> <span class="mi">2</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span> <span class="p">{</span>
<span class="k">for</span> <span class="nx">j</span> <span class="o">:=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">j</span> <span class="p"><</span> <span class="mi">3</span><span class="p">;</span> <span class="nx">j</span><span class="o">++</span> <span class="p">{</span>
<span class="nx">twoD</span><span class="p">[</span><span class="nx">i</span><span class="p">][</span><span class="nx">j</span><span class="p">]</span> <span class="p">=</span> <span class="nx">i</span> <span class="o">+</span> <span class="nx">j</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"2d: "</span><span class="p">,</span> <span class="nx">twoD</span><span class="p">)</span>
<span class="p">}</span>
</pre>
</td>
</tr>
</table>
<table>
<tr>
<td class="docs">
<p>ဒီမှာတခုမှတ်ထားရမှာက ကျနော်တို့
fmt.Println<code>ကိုသုံပီးတော့ arrays တွေကို print
လုပ်ထားပီး</code>[v1 v2 v3 …]` ပြောင်းသွားတယ်။</p>
</td>
<td class="code">
<pre class="chroma">
<span class="gp">$</span> go run arrays.go
<span class="go">emp: [0 0 0 0 0]
</span><span class="go">set: [0 0 0 0 100]
</span><span class="go">get: 100
</span><span class="go">len: 5
</span><span class="go">dcl: [1 2 3 4 5]
</span><span class="go">2d: [[0 1 2] [1 2 3]]</span></pre>
</td>
</tr>
</table>
<p class="next">
နောက်ဥပမာ: <a href="slices">Slices</a>.
</p>
<p class="footer">
by <a href="https://markmcgranaghan.com">Mark McGranaghan</a> နှင့် <a href="https://eli.thegreenplace.net">Eli Bendersky</a> | <a href="https://github.com/mmcgrana/gobyexample">source</a> | <a href="https://github.com/mmcgrana/gobyexample#license">license</a>
</p>
</div>
<script>
var codeLines = [];
codeLines.push('');codeLines.push('package main\u000A');codeLines.push('import \"fmt\"\u000A');codeLines.push('func main() {\u000A');codeLines.push(' var a [5]int\u000A fmt.Println(\"emp:\", a)\u000A');codeLines.push(' a[4] \u003D 100\u000A fmt.Println(\"set:\", a)\u000A fmt.Println(\"get:\", a[4])\u000A');codeLines.push(' fmt.Println(\"len:\", len(a))\u000A');codeLines.push(' b :\u003D [5]int{1, 2, 3, 4, 5}\u000A fmt.Println(\"dcl:\", b)\u000A');codeLines.push(' var twoD [2][3]int\u000A for i :\u003D 0; i \u003C 2; i++ {\u000A for j :\u003D 0; j \u003C 3; j++ {\u000A twoD[i][j] \u003D i + j\u000A }\u000A }\u000A fmt.Println(\"2d: \", twoD)\u000A}\u000A');codeLines.push('');
</script>
<script src="site.js" async></script>
</body>
</html>