Day03 P1

puzzleInput/03-input.txt

@@ -0,0 +1,1000 @@
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puzzleInput/03-test.txt

@@ -0,0 +1,12 @@
+00100
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+10000
+11001
+00010
+01010

src/main/kotlin/Day03.kt

@@ -0,0 +1,52 @@
+import java.nio.file.Files
+import kotlin.io.path.Path
+
+fun main() {
+
+    val lines = Files.readAllLines(Path("puzzleInput/03-input.txt"))
+    println(lines)
+    val day = Day03(lines)
+    day.solvePuzzlePartOne()
+//    day.solvePuzzlePartTwo()
+}
+
+class Day03(val lines: MutableList<String>) {
+
+    fun solvePuzzlePartOne() {
+
+        val bitLength = lines.first().length
+        val onesPerPos = IntArray(bitLength)
+        for (line in lines) {
+            for (i in 0 until bitLength) {
+                if (line[i].digitToInt() == 1) {
+                    onesPerPos[i] += 1
+                }
+            }
+        }
+
+        var gammaString: String = ""
+        var epsilonString: String = ""
+        for (pos in onesPerPos) {
+            if (pos > lines.size/2) {
+                gammaString += "1"
+                epsilonString += "0"
+            } else {
+                gammaString += "0"
+                epsilonString += "1"
+            }
+        }
+
+        println(onesPerPos.toList())
+        val gamma = gammaString.toInt(2)
+        val epsilon = epsilonString.toInt(2)
+        println("Gamma $gammaString->$gamma")
+        println("Gamma $epsilonString->$epsilon")
+        val power = gamma * epsilon
+        println("PartOne:  $power")
+    }
+
+    fun solvePuzzlePartTwo() {
+
+    }
+
+}