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Merge pull request #3321 from ankushagarwal/patch-1

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[c++/en] Add comments about unordered_map and unordered_set
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Divay Prakash 2018-10-22 23:56:13 +05:30 committed by GitHub
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@ -1057,6 +1057,8 @@ cout << ST.size(); // will print the size of set ST
// Output: 0
// NOTE: for duplicate elements we can use multiset
// NOTE: For hash sets, use unordered_set. They are more effecient but
// do not preserve order. unordered_set is available since C++11
// Map
// Maps store elements formed by a combination of a key value
@ -1084,6 +1086,8 @@ cout << it->second;
// Output: 26
// NOTE: For hash maps, use unordered_map. They are more effecient but do
// not preserve order. unordered_map is available since C++11.
///////////////////////////////////
// Logical and Bitwise operators