LeetCode: Find Duplicate File In System Solution

1/**
2 * @param {string[]} paths
3 * @return {string[][]}
4 */
5var findDuplicate = function (paths) {
6  const contentPathMap = new Map()
7
8  paths.forEach(rawPath => {
9    let [dirPath, ...files] = rawPath.split(" ")
10
11    // extract content
12    files = files.map(file =>
13      file.replace("(", " ").replace(")", "").split(" ")
14    )
15
16    files.forEach(([fileName, content]) => {
17      const filePath = `${dirPath}/${fileName}`
18      if (contentPathMap.has(content)) {
19        contentPathMap.get(content).push(filePath)
20      } else {
21        contentPathMap.set(content, [filePath])
22      }
23    })
24  })
25
26  return [...contentPathMap.values()].filter(filePaths => filePaths.length > 1)
27}