Sort Array by Increasing Frequency LeetCode Problem (23 JULY 2024)

Описание: ⭐IN THIS GIVEN PROBLEM WE HAVE TO RETURN THE ARRAY OF ELEMENTS IN SUCH A WAY , LESSEER FREQUENCY APPERS FIRST THAN THE OTHER INCREASIING FREQUENCY..
⭐WE CAN SIMPLY USE UNORDERED MAP TO STORE ITS ELEMENTS WITH THE FREQUENCY.
⭐ONCE WE GET THE FREQUENCY, WE NEED TO SORT IT USING SORTING FUNCTION , BUT ALONG WITH THAT WE NEED TO USE LAMDA EXPRESSION WHICH IS USE TO ACCESS THE DATA FROM OUTSIDE , WITH A
[CALL BY ADDRESS] WITH A PARAMETER( INT A, INT B) WHERE A AND B DESCRIBE TWO ELEMENTS WITH THEIR FREQUENCY , BASED ON THAT WE SORT IT ...