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Tag Archives: cpp-unordered_map

Given an array of strings arr[] and two integers l and r, the task is to find the number of times the given string str… Read More
Given an array arr[], the task is to count the maximum count of pairs that give the same sum. Examples:  Input: arr[] = {1, 2,… Read More
Given an array of N integers and an integer K. The task is to print the maximum number of pairs(a[i]+a[j]) possible which are divisible by… Read More
Given an array of N numbers, the task is to find the number of sub-arrays (size of the sub-array should be an even number) of… Read More
Given n sentences. The task is to count the number of words that appear in all of these sentences. Note that every word consists of… Read More
Given an array of N numbers that has all divisors of two numbers in any order. The task is to find the two numbers whose… Read More
The unordered_map::emplace() is a built-in function in C++ STL which inserts the key and its element in the unordered_map container. It effectively increases the container… Read More
Given N bracket sequences, the task is to find the number of pairs of bracket sequences by joining which can be obtained a balanced bracket… Read More
cbegin function in c++ is used to return a constant iterator pointing the first element in an unordered map. Syntax: unordered_map.cbegin() Parameter: It takes an… Read More
The unordered_multimap::size() is a built-in function in C++ Standard Template Library which return’s the number of element int the unordered map. Syntax: unordered_multimap_name.size() Return Value:… Read More
find function in C++ is used to search for a specific key in an unordered map. Syntax unordered_map.find(key); Parameters: It takes the key as a… Read More
erase function is used to erase elements from the unordered_map. There are three type of erase functions supported by unordered_map : erasing by iterator: It… Read More
Given an array arr[], the task is to find the count of pairs in the array such that LCM(arr[i], arr[j]) > min(arr[i], arr[j]) Note: Pairs (arr[i],… Read More
unordered_map::get_allocator() is a built in function in C++ STL which is used to get allocator of container unordered_map. Syntax Allocator_type get_allocator() Parameters: This function does… Read More
The unordered_map::insert() is a built-in function in C++ STL which is used to insert elements with a particular key in the unordered_map container. This function… Read More

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