-
Notifications
You must be signed in to change notification settings - Fork 3
Expand file tree
/
Copy pathJavaLambdaExpression.java
More file actions
34 lines (29 loc) · 1007 Bytes
/
Copy pathJavaLambdaExpression.java
File metadata and controls
34 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);
};
}
}
}