Leetcode Problem 880. Decoded String at Index

880. Decoded String at Index

Leetcode Solutions

Initialize size to 0 to represent the length of the decoded string.
Iterate through the encoded string s to calculate the total size.
- If the character is a letter, increment size by 1.
- If the character is a digit, multiply size by the digit.
Iterate backwards through the string s.
- If the character is a digit d, divide size by d and reduce k modulo size.
- If the character is a letter:
  - If k modulo size is 0, return the current letter.
  - Otherwise, decrement size by 1.
Continue until the k-th letter is found.

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