solution id : 12300691 and 12300696 http://codeforces.com/submissions/arbit unordered_map is giving wrong answers while map gives the correct answer.stl, hashmap Compare Revisions History Revisions Rev.Lang.ByWhenΔComment en1 zeref_dragoneel 2015-08-01 11:12:10 246 Initial revision (published...
http://codeforces.com/contest/512/problem/B solution id : 12300691 and 12300696http://codeforces.com/submissions/arbit unordered_map is giving wrong answers while map gives the correct answer.
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unordered_map<int,int> dp;for(inti : arr) { dp[i] =1+ dp[i - difference]; res =max(dp[i], res); }returnres; } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/1218 参考资料: https://leetcode.com/problems/longest-arithmetic-subsequence-of-given-difference/ ...
What is the difference between Directed Graph and Undirected Graph? In a directed graph an edge is an ordered pair, where the ordered pair represents the direction of the edge that links the two vertices. On the other hand, in an undirected graph, an edge is an unordered pair, since there...
Hash is an unordered key-value map. It's even more efficient than a BTree:O(1)instead ofO(log n). But it doesn't have any concept of order so it can't be used for sort operations or to fetch ranges. As a side note, originally, MySQL only allowed Hash indexes onMEMORYtables; but...
It is believed that if we want to remove duplicates from any collection, the best way is to convert it into a set, but the set is a collection that is unordered, unchangeable*, and unindexed elements.Set difference for pandasTo drop the duplicates and create a set difference for the ...
Set is an unordered collection, it doesn’t maintain any order. There are few implementations of Set which maintains the order such as LinkedHashSet (It maintains the elements in insertion order). 2) List allows duplicates while Set doesn’t allow duplicate elements. All the elements of a Se...
The Set interface provides an unordered collection of unique objects, i.e. Set doesn't allow duplicates, while Map provides a data structure based on key-value pair and hashing. All three List, Set, and Map are interfaces in Java and there are many concrete implementations of them are ava...
Hashmap provides unordered data access with average constant time complexity, while TreeMap maintains a sorted order with logarithmic time operations.