SET
Getting an element from a Set
Why doesn\'t Set provide an operation to get an element that equals another element? Se开发者_如何学运维t<Foo> set = ...;[详细]
2023-04-01 19:43 分类：问答Good Average of Speed/Memory Efficiency Method to Create a Set In C?:
Let\'s say that I am streaming non-empty strings (char[]/char*s) into my program. I would like to create a set of them. That is, for any element a in set S, a is unique in S.[详细]
2023-04-01 18:46 分类：问答Static sized combinations
Hour upon hour and I cannot come up with a solution. Let\'s say I have ABC, I need all it\'s 3 letter combinations, a开发者_如何学编程bc, bbc, cbc etc. Not a ab abc etc. Can it be done with just loop[详细]
2023-04-01 06:43 分类：问答Algorithm to find powerset of {1,2,3}
I think i\'m finding this a little confusing because i\'ve never really used Java sets. Could someone please try and show me (preferably by explaining how the powerset is gradually being created) in t[详细]
2023-04-01 00:42 分类：问答Java: HashMap claims it has key, but somehow hasn't
I have a HashMap mapping objects of my Context class to Integers. In the Context class, I did override the public int hashCode() and public boolean equals(Object c) of java.lang.Object. However, I hav[详细]
2023-03-31 19:24 分类：问答Using begin() and end() with a set in c++
I am trying use an iterator to go through a set and then do something with the members of that set(if there are any). The problem is that, normally this works, but sometimes, it compares the beginning[详细]
2023-03-31 09:07 分类：问答Problem with NSOrderedSet addObject when unarchiving from file
I have been searching everywhere on the web and trying everything that I can think of so far to no avail. Here is my problem:[详细]
2023-03-31 07:55 分类：问答Get a random subset from a result set in java
I have a set of 100 object. How can i get a subset of 5 objects from this set ? I\'m doing this for now but it only returns me one object[详细]
2023-03-30 22:30 分类：问答How to get difference between elements of two std::set<string>?
So we have set<string>开发者_Go百科 a and set<string> b and we want to get std::set<string> c which would contain items that would represent a - b (meaning what is left from a if we[详细]
2023-03-30 15:24 分类：问答Ordering things in python...?
I was under the impression that set() would order a collection much like .sort() However it seems that it doesn\'t, what was peculiar to me was why it reorders the collection.[详细]
2023-03-29 16:41 分类：问答
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