.某班有10个学生，进行数学、语文、英语以及C++科目的考试，编写程序： 1）讲考试成绩输入一个二维数组 2）求每一门课的平均成绩、不及格人数以及每门课的最高分和最低分 3）求每个学生的平均成绩、总分不及格门数 4）按学生平均成绩的高低排序并输出。

这是一个涉及到数据结构和算法的问题，我们可以使用Python来模拟这个场景。首先，我们需要创建一个二维数组存储每个学生的各科目成绩。然后，分别计算每门课的平均分、不及格人数、最高分和最低分。接着统计每个学生的总分和平均成绩，并找出不及格的门数。最后，我们按照平均成绩对学生进行排序。 以下是简化的Python代码示例： ```python # 假设学生成绩存储在一个二维列表中 scores = [ [85, 90, 78, 92], [96, 88, 93, 95], # 学生1 [70, 65, 55, 80], # 学生2 # 其他学生... ] # 计算各科成绩 def calculate_subject_scores(scores): num_students, _ = len(scores), len(scores[0]) avg_scores, min_scores, max_scores, fail_counts = {}, {}, {}, {} for subject in range(len(scores[0])): total = sum(score[subject] for score in scores) avg = total / num_students min_score, max_score = min(score[subject] for score in scores), max(score[subject] for score in scores) avg_scores[f'Subject {subject+1}'] = avg min_scores[f'Subject {subject+1}'] = min_score max_scores[f'Subject {subject+1}'] = max_score fail_counts[f'Subject {subject+1}'] = sum(1 for score in scores if score[subject] < 60) return avg_scores, min_scores, max_scores, fail_counts # 每位学生的平均成绩和不及格门数 def student_stats(scores): students_avg = {} students_fail_count = {} for i, student_scores in enumerate(scores): total = sum(student_scores) avg = total / len(student_scores) students_avg[i+1] = avg students_fail_count[i+1] = sum(1 for score in student_scores if score < 60) return students_avg, students_fail_count # 按照平均成绩排序 def sort_students_by_average(students_avg): sorted_students = sorted(students_avg.items(), key=lambda x: x[1], reverse=True) return sorted_students # 示例计算 avg_scores, _, _, _ = calculate_subject_scores(scores) students_avg, students_fail_count = student_stats(scores) sorted_students = sort_students_by_average(students_avg) # 输出结果 print("各科成绩:") for key, value in avg_scores.items(): print(f"{key}: 平均分={value}, 不及格人数={fail_counts[key]}") print("\n每位学生的平均成绩和不及格门数:") for student, avg in students_avg.items(): print(f"学生{student}: 平均成绩={avg}, 不及格门数={students_fail_count[student]}") print("\n按平均成绩排序的学生:") for rank, (student, _) in enumerate(sorted_students, start=1): print(f"{rank}. 学生{student}: 平均成绩={_}") ```