Published onMay 12, 2026算法003-dijkstra(购买苹果的最低成本 II)#算法#困难#笔记#dijkstra#贪心#无向图本贴依托于[购买苹果的最低成本 II](https://leetcode.cn/problems/minimum-cost-to-buy-apples-ii/)的题，回顾dijkstra经典最短路径算法
Published onMay 8, 2026算法002-最长递增子序列#算法#困难#笔记#动态规划#贪心#二分查找3道题解法类似，复杂度逐步提升。最长递增子序列：https://leetcode.cn/problems/longest-increasing-subsequence，俄罗斯套娃信封问题：https://leetcode.cn/problems/russian-doll-envelopes，删除元素后最大固定点数目：https://leetcode.cn/problems/maximize-fixed-points-after-deletions
Published onApril 30, 2026算法001-网格图操作后的最大分数#算法#困难#笔记#动态规划#dfs原题链接https://leetcode.cn/problems/maximum-score-from-grid-operations
