Edit Distance   Given two words word1 and word2, find the minimum number of operations required to convert word1 to word2.   You have the following 3 operations permitted on a word:   1. Insert a character  2. Delete a character  3. Replace a character     Example 1:  Input:  word1 = "horse", word2 = "ros" Output:  3 Explanation:   horse -> rorse (replace 'h' with 'r') rorse -> rose (remove 'r') rose -> ros (remove 'e')   Example 2:  Input:  word1 = "intention", word2 = "execution" Output:  5 Explanation:   intention -> inention (remove 't') inention -> enention (replace 'i' with 'e') enention -> exention (replace 'n' with 'x') exention -> exection (replace 'n' with 'c') exection -> execution (insert 'u')     Solution in Java :   class Solution {      public int minDistance(String word1, String word2) {          int m = word1....