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[leetcode shell]192. Word Frequency

统计words.txt中每个单词出现的次数并排序

解法1:

cat words.txt | tr -s   \n | sort | uniq -c | sort -r | awk {print $2,$1}

解法2:

cat words.txt | awk {for(i=1;i<=NF;i++){count[$i]++}}END{for (i in count){print i,count[i]}} | sort -k2nr

 

[leetcode shell]192. Word Frequency