转置文件的内容
http://www.nowcoder.com/practice/2240cd809c8f4d80b3479d7c95bb1e2e
awk '{
for(i=1;i<=NF;i++){
if(NR==1){
row[i] = $i;
}else{
row[i] = row[i]" "$i;
}
}
}END{
for(i=1;i<=NF;i++){
print row[i]
}
}
' ./nowcoder.txt 相关推荐
球球与墩墩：这不是前端常考的对象扁平化吗，面试官像是前端出来的
const flattern = (obj) => {
const res = {};
const dfs = (curr, path) => {
if(typeof curr === 'object' && curr !== null) {
const isArray = Array.isArray(curr);
for(let key in curr) {
const newPath = path ? isArray ? `${path}[${key}]` : `${path}.${key}` : key;
dfs(curr[key], newPath);
}
} else {
res[path] = curr
}
}
dfs(obj);
return res;
}
查看3道真题和解析 
