發簡信
IP屬地：華盛頓州
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leetcode-tree relevant
一個inorder traverse 的iteration： 先循環左邊，左邊循環完循環右邊，但是右邊的node也要循環他的左邊，所以要把循環左...
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leetcode-12
Coin Change Boundary: There may be no possible change, so in this scenar...
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leetcode-11
House Robber [2,1,1,2] => 并不是每隔一個加一就是最佳最佳問題=>考慮DP=>思考循環的關聯對于一個nums[i]: r...
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MAC OSX下opencv 4的靜態庫編譯與連接/ compile and link opencv static library under OSX我！終于！成功在MAC下面把opencv4程序靜態編譯起來了！先上compile的命令：g++ -std=c++11 main.cpp prep...
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leetcode-Best Time to Buy and Sell Stock
Best Time to Buy and Sell Stock 其實也算是DP，每次的結果和前一次的結果比較 Best Time to Buy ...
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leetcode-9
Subsets Bit manipulation and map can be useful aside from backtracking P...
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leetcode-8
Climbing Stairs Just Fibonacci. Dynamic Programming's space complexity c...
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Backtracking
Combination Sum Most basic backtracking. The idea of begin position is e...
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leetcode-day6
輸入值是指針考慮是不是NULL， next是不是NULL輸入值是數組考慮長度為0 Search a 2D Matrix II Instead o...