java - Efficient way to test if a string is substring of any in a list of strings -


i want know best way compare string list of strings. here code have in mind, it's clear it's not in terms of time complexity.

for (string large : list1) {     (string small : list2) {         if (large.contains(small)) {             //         } else {             // not me         }     }      // further manipulation of string  }

both lists of strings can contain more thousand values, worst case complexity can rise 1000×1000×length mess. want know best way perform task of comparing string list of strings, in given scenario above.

you this:

 (string small : list2) {     if (set1.contains(small)) {         //     } else {         // not me     } }

set1 should larger list of string, , instead of keeping list<string>, use set<string> or hashset<string>


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