The “count and say” is a sequence of strings built by describing the previous string:
The sequence starts with countAndSay(1) = “1”
For n > 1, countAndSay(n) is created by run-length encoding the string countAndSay(n - 1).
Run-length encoding (RLE) works by grouping identical consecutive characters and replacing each group with the count of characters followed by the character itself. For example, the string “15224” is read as: one 1, one 5, two 2s, and one 4, producing “11152214”.
Given a positive integer n, return the
Constraints:
n
The count and say problem generates a sequence of strings, where each term describes the previous one. Starting from “1”, every next term is built by counting consecutive identical ...
The “count and say” is a sequence of strings built by describing the previous string:
The sequence starts with countAndSay(1) = “1”
For n > 1, countAndSay(n) is created by run-length encoding the string countAndSay(n - 1).
Run-length encoding (RLE) works by grouping identical consecutive characters and replacing each group with the count of characters followed by the character itself. For example, the string “15224” is read as: one 1, one 5, two 2s, and one 4, producing “11152214”.
Given a positive integer n, return the
Constraints:
n
The count and say problem generates a sequence of strings, where each term describes the previous one. Starting from “1”, every next term is built by counting consecutive identical ...