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GeezerVison is showing github.com — hackerrank-java/src/JavaLambdaExpression.java at master · anishLearnsToCode/hackerrank-java Expand file tree/ Copy pathJavaLambdaExpression.javaMore file actions 34 lines (29 loc) · 1007 Bytes / Copy pathJavaLambdaExpression.javaFile metadata and controls34 lines (29 loc) · 1007 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 // https://www.hackerrank.com/challenges/java-lambda-expressions/problem public class JavaLambdaExpression { private interface PerformOperation { boolean check(int number); } private static class MyMath { public static PerformOperation isOdd() { return (int a) -> a % 2 != 0; } public static PerformOperation isPrime() { return (int number) -> { if(number == 1) return false; for (int index = 2 ; index * index <= number ; index++) { if (number % index == 0) { return false; } } return true; }; } public static PerformOperation isPalindrome() { return (int a) -> { String number = a + ""; String reverse = new StringBuilder(number).reverse().toString(); return number.equals(reverse); }; } } } |
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