学習環境
- Surface 3 (4G LTE)、Surface 3 タイプ カバー、Surface ペン(端末)
- Windows 10 Pro (OS)
- Nebo(Windows アプリ)
- iPad Pro + Apple Pencil
- MyScript Nebo(iPad アプリ)
- 参考書籍
代数系入門 (松坂 和夫(著)、岩波書店)の第1章(整数)、6(同値関係、合同式)、問題1.を取り組んでみる。
よって、
コード(Emacs)
Python 3
#!/usr/bin/env python3 def mod(a, b, m): return (a - b) % m == 0 a = 11 b = 21 m = 2 for k in range(10): print(f'{k}: {mod(a, b + k * m, m)}')
入出力結果(Terminal, Jupyter(IPython))
$ ./sample1.py 0: True 1: True 2: True 3: True 4: True 5: True 6: True 7: True 8: True 9: True $
HTML5
<pre id="output0"></pre> <input id="a0" type="number" step="1" value="3"> ≡ <input id="b0" type="number" step="1" value="5"> + <input id="k0" type="number" step="1" value="10">・ <input id="m0" type="number" step="1" value="2"> (mod <span id="m1"></span>) <br> <button id="run0">run</button> <button id="clear0">clear</button> <script src="sample1.js"></script>
JavaScript
let pre0 = document.querySelector('#output0'), run0 = document.querySelector('#run0'), clear0 = document.querySelector('#clear0'), input_a0 = document.querySelector('#a0'), input_b0 = document.querySelector('#b0'), input_k0 = document.querySelector('#k0'), input_m0 = document.querySelector('#m0'), span_m1 = document.querySelector('#m1'), inputs = [input_a0, input_b0, input_k0, input_m0], range = (n) => { let result = []; for (let i = 0; i < n; i += 1) { result.push(i); } return result; }, p = (text) => pre0.textContent += text + '\n', clear = () => pre0.textContent = '', output = () => { let a0 = parseInt(input_a0.value, 10), b0 = parseInt(input_b0.value, 10), k0 = parseInt(input_k0.value, 10), m0 = parseInt(input_m0.value, 10); span_m1.textContent = m0; p((a0 - (b0 + k0 * m0)) % m0 == 0); }; run0.onclick = output; clear0.onclick = clear; inputs.forEach((input) => input.onchange = output); output();≡ + ・ (mod )
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