(kotlin) added day 2 part 2

02/day2_2.kt

@@ -0,0 +1,28 @@
+import java.io.File
+import java.io.InputStream
+
+fun countDifferences(s1: String, s2: String): Int {
+    var diffs = 0
+    for (pair in s1 zip s2) {
+        if (pair.first != pair.second) {
+            diffs++
+        }
+    }
+    return diffs
+}
+
+fun main(args: Array<String>) {
+    val inputStream: InputStream = File("input").inputStream()
+    val inputLines = inputStream.bufferedReader().use { it.readText() }.split("\n");
+    for (line1 in inputLines) {
+        for (line2 in inputLines) {
+            if (countDifferences(line1, line2) == 1) {
+                println(line1)
+                println(line2)
+                return
+            }
+            else {
+            }
+        }
+    }
+}

tickets.md

@@ -1,6 +1,6 @@
 C               IIII
 Go              IIIII
-Kotlin          IIIII
+Kotlin          IIII
 Python          IIIII
 Rust            IIIII