318. Maximum Product of Word Lengths

318. Maximum Product of Word Lengths

Given a string array words, find the maximum value of length(word[i]) * length(word[j]) where the two words do not share common letters. You may assume that each word will contain only lower case letters. If no such two words exist, return 0.

Example 1: Given [“abcw”, “baz”, “foo”, “bar”, “xtfn”, “abcdef”] Return 16 The two words can be “abcw”, “xtfn”.

Example 2: Given [“a”, “ab”, “abc”, “d”, “cd”, “bcd”, “abcd”] Return 4 The two words can be “ab”, “cd”.

Example 3: Given [“a”, “aa”, “aaa”, “aaaa”] Return 0 No such pair of words.

class Solution { public int maxProduct(String[] words) { int len = words.length; if(len <=1 ) return 0; int[] mask = new int[len]; for(int i=0;i

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