LeetCode 392. Is Subsequence
每日題。今天才注意這題有follow up。
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LeetCode 1905. Count Sub Islands
Study Plan - Graph Theory。 原來接下來三天一樣都是矩陣題，尷尬萬分。
LeetCode 1779. Find Nearest Point That Has the Same X or Y Coordinate
Study Plan - Programming Skills。
LeetCode 1020. Number of Enclaves
Study Plan - Graph Theory。 這套題前面都是這種小島題，就算只要稍微改程式碼還是覺得有點無聊。
LeetCode 733. Flood Fill
Study Plan - Graph Theory - Day 1 - Matrix Related Problems。