LeetCode 192 Word Frequency
2015-04-22 22:14
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题目
分析
1.利用awk默认一行一条记录，默认以空格划分每条记录，NF为划分的总块数先打印出所有单词。2.排序+统计+消除重复
3.输出
题解
awk '{i=1;while(i<=NF){print $i;i++}}' words.txt \
| sort | uniq -c \
| sort -k1nr \
|awk '{print $2 " " $1}'
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