basic algorithm- 20190416-20190425

binary search

14.https://www.lintcode.com/problem/first-position-of-target/description

74.https://www.lintcode.com/problem/first-bad-version/description

Tree

97.https://www.lintcode.com/problem/maximum-depth-of-binary-tree/description

480.https://www.lintcode.com/problem/binary-tree-paths/description

596.https://www.lintcode.com/problem/minimum-subtree/description

93.https://www.lintcode.com/problem/balanced-binary-tree/description

578.https://www.lintcode.com/problem/lowest-common-ancestor-iii/description

95.https://www.lintcode.com/problem/validate-binary-search-tree/description

BFS

69.https://www.lintcode.com/problem/binary-tree-level-order-traversal/description  70.71

7.https://www.lintcode.com/problem/serialize-and-deserialize-binary-tree/description

178.https://www.lintcode.com/problem/graph-valid-tree/description

127.https://www.lintcode.com/problem/topological-sorting/description  拓扑

433.https://www.lintcode.com/problem/number-of-islands/description

432.https://www.lintcode.com/problem/connected-component-in-undirected-graph/description

DFS

135.https://www.lintcode.com/problem/combination-sum/description

153.https://www.lintcode.com/problem/combination-sum-ii/description 选代表条件： i>0 && num[i]==num[i-1] && i!=index

136.https://www.lintcode.com/problem/palindrome-partitioning/description

15.https://www.lintcode.com/problem/permutations/description 排列

16.https://www.lintcode.com/problem/permutations-ii/description  选代表条件：i>0 && nums[i]==nums[i-1] && visited[i-1]=false

list

65.https://www.lintcode.com/problem/median-of-two-sorted-arrays/description

twoSum:

100.https://www.lintcode.com/problem/remove-duplicates-from-sorted-array/description

101.https://www.lintcode.com/problem/remove-duplicates-from-sorted-array-ii/description could do 2nd time

604.https://www.lintcode.com/problem/window-sum/description

415.https://www.lintcode.com/problem/valid-palindrome/description

891.https://www.lintcode.com/problem/valid-palindrome-ii/description

56.https://www.lintcode.com/problem/two-sum/description

609.https://www.lintcode.com/problem/two-sum-less-than-or-equal-to-target/description

608.https://www.lintcode.com/problem/two-sum-ii-input-array-is-sorted/description

607.https://www.lintcode.com/problem/two-sum-iii-data-structure-design/description

57.https://www.lintcode.com/problem/3sum/description

59.https://www.lintcode.com/problem/3sum-closest/description

918.https://www.lintcode.com/problem/3sum-smaller/description

382.https://www.lintcode.com/problem/triangle-count/description

31.https://www.lintcode.com/problem/partition-array/description

373.https://www.lintcode.com/problem/partition-array-by-odd-and-even/description

148.https://www.lintcode.com/problem/sort-colors/description

143.https://www.lintcode.com/problem/sort-colors-ii/description

heap&hash

129.https://www.lintcode.com/problem/rehashing/description reharshing

134.https://www.lintcode.com/problem/lru-cache/description LRU Cache

517.https://www.lintcode.com/problem/ugly-number/description

4.https://www.lintcode.com/problem/ugly-number-ii/description

54.https://www.lintcode.com/problem/top-k-largest-numbers/description

545.https://www.lintcode.com/problem/top-k-largest-numbers-ii/description

612.https://www.lintcode.com/problem/k-closest-points/description

104.https://www.lintcode.com/problem/merge-k-sorted-lists/description

81.https://www.lintcode.com/problem/find-median-from-data-stream/description

401.https://www.lintcode.com/problem/kth-smallest-number-in-sorted-matrix/description

DP:

109.https://www.lintcode.com/problem/triangle/description

110.https://www.lintcode.com/problem/minimum-path-sum/description

114.https://www.lintcode.com/problem/unique-paths/description

115.https://www.lintcode.com/problem/unique-paths-ii/description

679.https://www.lintcode.com/problem/unique-paths-iii/description

111.https://www.lintcode.com/problem/climbing-stairs/description

1054.https://www.lintcode.com/problem/min-cost-climbing-stairs/description

116.https://www.lintcode.com/problem/jump-game/description  解答：http://www.cnblogs.com/yuzhangcmu/p/4039840.html

117.https://www.lintcode.com/problem/jump-game-ii/description  resolve:http://www.cnblogs.com/yuzhangcmu/p/4148858.html DP&Greedy

76.https://www.lintcode.com/problem/longest-increasing-subsequence/description LIS

1093.https://www.lintcode.com/problem/number-of-longest-increasing-subsequence/description