Question

我有一个具有以下结构的文件： student_name subject1 grade1 subject2 grade2 ...

我想出了如何计算每个科目有多少才能参加，但我不知道如何计算每个科目，其中有多少人的成绩大于5。

此外，我需要帮助找到每个科目的成绩，以及哪个成绩最高。

如果有人可以帮助我，我会很感激！

File Content:
Robert Java 8 Algorithms 8 Math 6
Andrew Java 9 Algorithms 7 Math 6
Ben Java 5 Algorithms 10 Math 8
Jerry Java 7 Algorithms 5 Math 7
Terry Java 4 Algorithms 5 Math 9
Ross Java 5 Algorithms 9 Math 7


Desired output:
The subject Java was attended by 6 stundets. Number of students with grade bigger than or equal to 5: 5
The subject Algorithms was attended by 6 students. Number of students with grade bigger than or equal to 5: 6
The subject Math was attended by 6 students. Number of students with grade bigger than or equal to 5: 6

Occurance of grades:
5:
6:
7:
8:
9:

Occurance of grades for Math:
6:
7:
8:
9:

到目前为止我得到了什么：

awk ' { for (i = 2; i <= NF; i += 2) C[$i]++;} {for (j = 3; j <= NF; j += 2) B[$j]++;} END { for (var in C) print "The ",var," subject was attanded by " C[var], "students" ; for (var3 in B) print "The occurance of grade: ",var3," is : ", B[var3]; }'\n $1

Answer 1

这是一个可用于添加打印格式的模板......

$ awk '{for(i=2;i<NF;i+=2) 
          {k=$i; g=$(i+1); a[k]++; 
           c[k]+=(g>=5); 
           grades[k]=(k in grades?grades[k]:k) ORS g}} 

    END{for(k in a) print k, a[k], c[k]; 
        for(k in grades) print grades[k]}' file

Algorithms 6 6
Math 6 6
Java 6 5
Algorithms
8
7
10
5
5
9
Math
6
6
8
7
9
7
Java
8
9
5
7
4
5

a数组包含主题的计数，c表示符合>=5条件的数据; grades具有所有科目的成绩。在END块，您遍历数组/映射以选择存储的值。请注意您的＃＆＃34; Java＆＃34;在发布的示例中，计数不正确。

不同行中的数字/单词的出现

1 个答案: