Contents

import java.util.Arrays;

public class Hexadecimal {
    private static final String HEXES = "0123456789abcdef";
    public static int toDecimal(String input){
        boolean  isHex = input.matches("^[0-9a-f]+");
        if (!isHex) return 0;
        return Arrays.stream(input.split(""))
                .map(HEXES::indexOf)
                .reduce(0, (decimal, hex) -> decimal * 16 + hex);

    }
}

Version data entries

290 entries across 290 versions & 1 rubygems

Version	Path
trackler-2.2.1.32	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.31	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.30	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.29	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.28	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.27	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.26	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.25	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.24	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.23	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.22	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.21	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.20	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.19	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.18	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.17	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.16	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.15	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.14	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java
trackler-2.2.1.13	tracks/java/exercises/hexadecimal/src/example/java/Hexadecimal.java