Multiplication tables: Difference between revisions
→or in a functional style of JS, without iteration
(Added an Algol W sample) |
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{{out}} (minus the style):
<div><table><tr><th>x</th><th>1</th><th>2</th><th>3</th><th>4</th><th>5</th><th>6</th><th>7</th><th>8</th><th>9</th><th>10</th><th>11</th><th>12</th></tr><tr><th>1</th><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td><td>8</td><td>9</td><td>10</td><td>11</td><td>12</td></tr><tr><th>2</th><td> </td><td>4</td><td>6</td><td>8</td><td>10</td><td>12</td><td>14</td><td>16</td><td>18</td><td>20</td><td>22</td><td>24</td></tr><tr><th>3</th><td> </td><td> </td><td>9</td><td>12</td><td>15</td><td>18</td><td>21</td><td>24</td><td>27</td><td>30</td><td>33</td><td>36</td></tr><tr><th>4</th><td> </td><td> </td><td> </td><td>16</td><td>20</td><td>24</td><td>28</td><td>32</td><td>36</td><td>40</td><td>44</td><td>48</td></tr><tr><th>5</th><td> </td><td> </td><td> </td><td> </td><td>25</td><td>30</td><td>35</td><td>40</td><td>45</td><td>50</td><td>55</td><td>60</td></tr><tr><th>6</th><td> </td><td> </td><td> </td><td> </td><td> </td><td>36</td><td>42</td><td>48</td><td>54</td><td>60</td><td>66</td><td>72</td></tr><tr><th>7</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>49</td><td>56</td><td>63</td><td>70</td><td>77</td><td>84</td></tr><tr><th>8</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>64</td><td>72</td><td>80</td><td>88</td><td>96</td></tr><tr><th>9</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>81</td><td>90</td><td>99</td><td>108</td></tr><tr><th>10</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>100</td><td>110</td><td>120</td></tr><tr><th>11</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>121</td><td>132</td></tr><tr><th>12</th><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>144</td></tr></table></div>
or in a functional style of JavaScript, without iteration:
<lang JavaScript>// [1..12]
// n --> n --> [n]
function range(m, n) {
return Array.apply(
null, Array(n - m + 1)
).map(function (x, i) {
return m + i;
});
}
// ' 1' .. ' 144'
// n --> n --> s
function cell(n, w) {
return Array(w - n.toString().length + 1).join(' ') + n;
}
// Heading and table
// n --> n --> s
(function (m, n) {
var lngColWidth = 4,
strEmpty = cell('', lngColWidth + 1),
// [1..12]
lstRange = range(m, n),
padded = function (x) {
return cell(x, lngColWidth)
},
// x 1 2 3 4 5 6 7 8 9 10 11 12
strHeading = (['x'].concat(lstRange)).map(padded).join(' '),
strTable = lstRange.map(function (iRow, i, lst) {
// 1st col - multiplier
return [padded(iRow)].concat(
// left gap (triangle only)
Array(iRow).join(strEmpty).concat(
// padded products
lst.slice(i).map(function (x) {
return padded(x * iRow);
}).join(' ')
)
).join(' ');
}).join('\n');
return strHeading + '\n' + strTable;
})(1, 12);</lang>
Output:
<pre> x 1 2 3 4 5 6 7 8 9 10 11 12
1 1 2 3 4 5 6 7 8 9 10 11 12
2 4 6 8 10 12 14 16 18 20 22 24
3 9 12 15 18 21 24 27 30 33 36
4 16 20 24 28 32 36 40 44 48
5 25 30 35 40 45 50 55 60
6 36 42 48 54 60 66 72
7 49 56 63 70 77 84
8 64 72 80 88 96
9 81 90 99 108
10 100 110 120
11 121 132
12 144</pre>
=={{header|Julia}}==
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