#1585
Check If String Is Transformable With Substring Sort Operations
hard · verified · 51.2% accepted · 456 likes · top 40%
Description
Given two strings s and t, transform string s into string t using the following operation any number of times:
- Choose a non-empty substring in s and sort it in place so the characters are in ascending order.
- For example, applying the operation on the underlined substring in "14234" results in "12344".
Return true if it is possible to transform s into t. Otherwise, return false.
A substring is a contiguous sequence of characters within a string.
Example 1:
Input: s = "84532", t = "34852"
Output: true
Explanation: You can transform s into t using the following sort operations:
"84532" (from index 2 to 3) -> "84352"
"84352" (from index 0 to 2) -> "34852"
Example 2:
Input: s = "34521", t = "23415"
Output: true
Explanation: You can transform s into t using the following sort operations:
"34521" -> "23451"
"23451" -> "23415"
Example 3:
Input: s = "12345", t = "12435"
Output: false
Solution