1 files changed, 14 insertions, 0 deletions
diff --git a/src/Utils.kt b/src/Utils.kt
index 23eacb9..27b88b5 100644
--- a/src/Utils.kt
+++ b/src/Utils.kt
@@ -4,16 +4,30 @@ import java.security.MessageDigest
 
 /**
  * Reads lines from the given input txt file.
+ * @param name name of the file
+ * @return list of strings containing line contents
  */
 fun readInputAsLines(name: String): List<String> = File("src", "$name.txt").readLines()
 
+/**
+ * Read lines from the given input txt file and convert them to decimal numbers.
+ * @param name name of the file
+ * @return list of ints containing numbers from each of file's lines
+ */
 fun readInputAsNumbers(name: String): List<Int> = readInputAsLines(name).map { it.toInt() }
 
+/**
+ * Read lines from the given input txt file containing binary numbers and convert them to lists of bits.
+ * @param name name of the file
+ * @return list of lists of ints, where each inner list represents bits of one line of input
+ */
 fun readInputAsBitLists(name: String): List<List<Int>> =
     readInputAsLines(name)
         .map { binaryString -> binaryString.toList().map { bit -> bit.toString().toInt() } }
 
 /**
  * Converts string to md5 hash.
+ * @receiver a string
+ * @return md5 hash of receiver
  */
 fun String.md5(): String = BigInteger(1, MessageDigest.getInstance("MD5").digest(toByteArray())).toString(16)