Question

我有文件

try.txt

RAM 142 149 131
Cache 456 152 184

我想为该行的每个值计算maximum, minimum, median

预期输出：

Min= 131 Max=149 Median=142
Min=152 Max=456 Median=184

这是我尝试过的。

for itr in {1..2}
do
awk "FNR == $itr { c=0;size=NF;
        for(i=2;i<=size;i++)
        arr[c++] =$i;

        for(i=0;i<c;i++)
        {
                for (j=i+1;j<c;j++)
                {
                    if(arr[i]>arr[j])
                    {
                        temp=arr[i];
                        arr[i]=arr[j];
                        arr[j]=temp;
                    }
                }
        }    

        print "Min=" arr[0] "Max=" arr[2] "Median=" arr[1]   
}" try.txt
done

为了处理输出，我创建了一个数组来保存每行的$ 2，$ 3，$ 4，但是不幸的是，它没有使用。创建数组以计算中位数的主要目的，因为元素必须按照排序顺序计算中位数。请帮助我为每行的值创建一个数组，以计算最小值，最大值，中位数。

Answer 1

对于仅包含3个数字的有限输入，我们可以：

cat <<EOF >file
LoginActivity 142 149 131
StorageCheckActivity 456 152 184
EOF

# remove the leading word
<file cut -d' ' -f2- | 
# for each 3 arguments, print them on separate line, sort them, remove newlines
xargs -n3 sh -c 'printf "%s\n" "$@" | sort | tr "\\n" " "' -- |
# for each of 3 arguments from the input, print them in nice formatting using printf
xargs -n3 sh -c 'printf "Min=%d Max=%d Median=%d\n" "$1" "$3" "$2"' --

将输出：

Min=131 Max=149 Median=142
Min=152 Max=456 Median=184

Answer 2

有趣的是，有3个比较：

awk '{ x=$2; y=$3; z=$4; }
     (x > y) {t=x;x=y;y=t}
     (y > z) {t=y;y=z;z=t}
     (x > y) {t=x;x=y;y=t}
     {print "Min="x" Max="z" Median="y}' file

Answer 3

使用快速的perl脚本（然后从shell脚本调用）进行操作：

#!/usr/bin/perl
use warnings;
use strict;
use feature qw/say/;

while (<>) {
    chomp;
    my @nums = sort { $a <=> $b } (split)[1,2,3];
    say "Min=$nums[0] Max=$nums[2] Median=$nums[1]";
}

示例：

$ ./example.pl try.txt
Min=131 Max=149 Median=142
Min=152 Max=456 Median=184

或者作为单线：

$ perl -lane 'printf "Min=%d Max=%d Median=%d\n", (sort { $a <=> $b } @F[1,2,3])[0,2,1]' try.txt 
Min=131 Max=149 Median=142
Min=152 Max=456 Median=184

但是，正如您所问的那样，这是一个针对gawk的awk版本：

$ gawk '{
   arr[1] = $2; arr[2] = $3; arr[3] = $4;
   asort(arr, arr, "@val_num_asc");
   printf "Min=%d Max=%d Median=%d\n", arr[1], arr[3], arr[2];
  }' try.txt

Answer 4

晚些时候参加聚会，但这是另一个Supplier<SessionToken>

const things = [ {
    location: 'Lynnwood, Wa',
    keyword: 'Video Production',
    user: null,
    profile: null,
    id: '5c659a55783fad6667853dd4' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597e4783fad6667853d8b' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597cc783fad6667853d8a' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c7783fad6667853d89' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c2783fad6667853d88' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c2783fad6667853d87' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659288783fad6667853d86' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659219783fad6667853d84' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659218783fad6667853d83' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659218783fad6667853d82' } ];

function getDuplicates(arry) {
    var duplicates = [];

    arry.forEach((item, index) => {
        if(arry.indexOf(item.location) != index && arry.indexOf(item.keyword) != index) {
            duplicates.push(item);
        }
    });

    return duplicates;
}


   /*
   Expected Result: (Excludes first occurance of dup but returns the rest)
   [
   { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597cc783fad6667853d8a' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c7783fad6667853d89' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c2783fad6667853d88' },
  { 
    location: 'Las Vegas',
    keyword: 'Cleaners',
    user: null,
    profile: null,
    id: '5c6597c2783fad6667853d87' },
    { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659219783fad6667853d84' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659218783fad6667853d83' },
  { 
    location: 'Lagos, La',
    keyword: 'Top Home',
    user: null,
    profile: null,
    id: '5c659218783fad6667853d82' }
   ]
   */

查找文件中定义的条目的中位数

4 个答案: