Question: C++ Using STL Map and Multimap Containers Create a program: using C++ & STL map to count the frequency of letters in a given string

C++ Using STL Map and Multimap Containers

Create a program: using C++ & STL map to count the frequency of letters in a given string (with no spaces). The map data structure stores pairs. In this map, the key will be the character, and the value will be its frequency. Print out the frequency map for the user entered text-string.

Then flip this map of character frequency to a multimap and show the letters in the order of its occurrence.

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