Given two strings s and t, return true if they are both one edit distance apart, otherwise return false.
A string s is said to be one distance apart from a string t if you can:
- Insert exactly one character into
sto gett. - Delete exactly one character from
sto gett. - Replace exactly one character of
swith a different character to gett.
Example 1:
Input: s = "ab", t = "acb" Output: true Explanation: We can insert 'c' into s to get t.
Example 2:
Input: s = "", t = "" Output: false Explanation: We cannot get t from s by only one step.
Example 3:
Input: s = "a", t = "" Output: true
Example 4:
Input: s = "", t = "A" Output: true
Constraints:
0 <= s.length <= 1040 <= t.length <= 104sandtconsist of lower-case letters, upper-case letters and/or digits.