Kotlin: 134. Gas Station

Author: MaratKhakim

kotlin/134-Gas-Station.kt

@@ -0,0 +1,26 @@
+class Solution {
+    fun canCompleteCircuit(gas: IntArray, cost: IntArray): Int {
+        var sum = 0
+        val n = gas.size
+
+        for (i in 0..n-1) {
+            sum += gas[i] - cost[i]
+        }
+
+        if (sum < 0)
+            return -1
+
+        var gasInTank = 0
+        var start = 0
+
+        for (i in 0..n-1) {
+            gasInTank += gas[i] - cost[i]
+            if (gasInTank < 0) {
+                start = i+1
+                gasInTank = 0
+            }
+        }
+
+        return if (gasInTank < 0) -1 else start
+    }
+}