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May 7, 2023 06:42
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アルゴ式：複雑なプログラムを書き直す(Swift版)
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| // 偏差値 (Z score) を計算する | |
| def float: calc_zscore(int: N, float[]: scores, float score) | |
| float: average = 0.0 | |
| for (初期値: index = 0, 条件: index < N, 更新: index += 1) | |
| average += scores[index] | |
| endfor | |
| average = average ÷ N の値 | |
| float: sd = 0.0 | |
| for (初期値: index = 0, 条件: index < N, 更新: index += 1) | |
| sd += (scores[index] - average) * (scores[index] - average) | |
| endfor | |
| sd = sd ÷ N の値 | |
| sd = sqrt(sd) | |
| float: z_score = 50 + 10 * (score - average) ÷ sd の値 | |
| return z_score | |
| // 生徒の人数 | |
| int: N = 5 | |
| // 試験の点数 | |
| float[]: scores = [70, 50, 85, 69, 63] | |
| // $1$ 番目の生徒の点数の偏差値を計算する | |
| float: z_score = calc_zscore(N, scores, scores[0]) | |
| print(z_score) |
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アルゴ式のプログラム技法、「大きなコードを分割する」のSwift版サンプルコード