Contents

import java.util.Arrays;

class Hexadecimal {
    private static final String HEXES = "0123456789abcdef";
    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

106 entries across 106 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.179	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.178	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.177	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.176	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.175	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.174	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.173	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.172	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.171	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.170	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.169	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.167	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.166	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.165	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.164	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.163	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.162	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.161	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java
trackler-2.2.1.160	tracks/java/exercises/hexadecimal/.meta/src/reference/java/Hexadecimal.java