Leetcode Problem 1370. Increasing Decreasing String

1370. Increasing Decreasing String

Leetcode Solutions

Frequency Mapping Approach

  1. Initialize a frequency array of size 26 to 0, representing the count of each character from 'a' to 'z'.
  2. Iterate over the input string and increment the frequency of the corresponding character.
  3. Initialize an empty result string.
  4. While the length of the result string is less than the input string: a. Append characters to the result string in ascending order of their ASCII values if their frequency is greater than 0. b. Decrease the frequency of each character appended. c. Append characters to the result string in descending order of their ASCII values if their frequency is greater than 0. d. Decrease the frequency of each character appended.
  5. Return the result string.
UML Thumbnail

Set and Map Iteration Approach

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...