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Check out this brilliant solution:https://discuss.leetcode.com/topic/70658/concise-java-solution-using-dp My first solution was a O(n^2) typical DP bo 阅读全文
posted @ 2017-01-28 15:24
Tonix
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The punch line of this one: sum of leaves: pi..pj = root..pj - root..pi. 阅读全文
posted @ 2017-01-28 14:44
Tonix
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