LeetCode：递增的三元子序列【334】
LeetCode：递增的三元子序列【334】 题目描述 给定一个未排序的数组，判断这个数组中是否存在长度为 3 的递增子序列。 数学表达式如下: 如果存在这样的 i, j, k, 且满足 0 ≤ i < j < k ≤ n-1， 使得 arr[i ...
原文：[LeetCode] Increasing Triplet Subsequence 递增的三元子序列
Given an unsorted array return whether an increasing subsequence of length exists or not in the array. Formally the function should: Return true if there exists i, j, k such that arr i lt arr j lt ar ...
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