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  1. Practice
  2. Java
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  4. Prime Checker
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Prime Checker

  • [deleted] + 0 comments

    Can improve 

    for (int i = 2; i < (num/2)+1; i++){
            if (num%i==0){
                return false;
            }
        }

    as

    for (int i = 2; i*i <= num; i++){
            if (num%i==0){
                return false;
            }
        }

    will be faster