Leetcode
Introduction
1.
First Chapter
1.1.
LC340 Longest Substring with At Most K Distinct Characters
1.2.
LC323 Number of Connected Components in an Undirected Graph
1.3.
LC255 Verify Preorder Sequence in Binary Search Tree
1.4.
LC254 Factor Combinations
1.5.
LC3 Longest Substring Without Repeating Characters
1.6.
LC265 Paint House II
1.7.
LC250 Count Univalue Subtrees
1.8.
LC329 Longest Increasing Path in a Matrix
1.9.
LC298 Binary Tree Longest Consecutive Sequence
1.10.
LC163 Missing Ranges
1.11.
LC325 Maximum Size Subarray Sum Equals k
1.12.
LC121 Best Time to Buy and Sell Stock
1.13.
LC101 Symmetric Tree
1.14.
LC118 Pascal's Triangle
1.15.
LintCode Permutation Index
1.16.
LintCode Permutation Index II
1.17.
Leetcode Wood Cut
1.18.
LintCode Delete Digits
1.19.
LeetCode35 Search Insert Position
1.20.
LC129 Sum Root to Leaf Numbers
Powered by
GitBook
Leetcode
LC340 Longest Substring with At Most K Distinct Characters
用HashMap + slinding window的思想 每次都保持k size个的hashmap，一旦超过k，就把位置最左边的元素移除，此时update一下最大值
