LeetCode 1066. Campus Bikes II
原題鏈接在這里：https://leetcode.com/problems/campus-bikes-ii/ 題目： On a campus represented as a 2D grid, there are N workers and M bikes, with N <= M. ...
原文：LeetCode 1066. Campus Bikes II
Backtracing Pruning TLE 最容易的解法是 backtracing，但是即使加了剪枝，還是會超時。 Backtracing Memoization 加一個memo減少遞歸次數。由於上面的寫法的遞歸函數返回void，要修改為有返回值的寫法才能運用memo。 讓 dfs 返回值為最小的距離和，然后將 bikeUsed 作為判斷標識。由於bike的數量 lt ，我們可以用int二進制 ...
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