grommitz

#!/usr/bin/env bash

# remove expired certs from a keystore
# set FN to the keystore file
# set the regex to identify expired certs. in my example anything mentioning 2019 is considered expired.

FN=cacerts.jks

echo "finding expired certs..."
ALIASES=`keytool -list -v -keystore $FN -storepass changeit | grep -i 'alias\|until' | grep --before=1 'until.*2019' | grep Alias | awk -F': ' '{print $2}' | sort`

grommitz

	@Test
	public void testBase64() throws IOException {
		String s = "the CAT sat on the MAT";
		String enc = "dGhlIENBVCBzYXQgb24gdGhlIE1BVA==";

		String sunMiscVersion = new String(new sun.misc.BASE64Decoder().decodeBuffer(enc), "utf8");
		String commonsVersion = new String(Base64.getDecoder().decode(enc), "utf8");

		Assert.assertThat(commonsVersion, is(sunMiscVersion));
		Assert.assertThat(commonsVersion, is(s));

grommitz

import org.junit.Test
import kotlin.test.assertEquals

// kata for converting an arabic integer to roman numerals
// see https://www.youtube.com/watch?time_continue=953&v=vX-Yym7166Y
// where it is done in ruby

private val constants: Map<Int, String> = hashMapOf(
        1 to "I",
        4 to "IV",

grommitz

    @Test
    public void mapEachTraderToTheSumOfTheirTransactions() {
        //TODO: Create a Map<String, Integer> that maps each Trader's name with the sum of all its Transactions’ values
        Map<String, Integer> mapNameToSumValue = new HashMap<>();


        mapNameToSumValue =
                transactions.stream()
                        .collect(groupingBy(transaction -> transaction.getTrader().getName(),
                                summingInt(transaction -> transaction.getValue())