1554. Strings Differ by One Character

Given a list of strings dict where all the strings are of the same length.

Return True if there are 2 strings that only differ by 1 character in the same index, otherwise return False.

Follow up: Could you solve this problem in O(n*m) where n is the length of dict and m is the length of each string.

Example 1:

Input: dict = ["abcd","acbd", "aacd"]
Output: true
Output: Strings "abcd" and "aacd" differ only by one character in the index 1.

Example 2:

Input: dict = ["ab","cd","yz"]
Output: false

Example 3:

Input: dict = ["abcd","cccc","abyd","abab"]
Output: true

Constraints:

• Number of characters in dict <= 10^5
• dict[i].length == dict[j].length
• dict[i] should be unique.
• dict[i] contains only lowercase English letters.