Create Count Collisions on a Road.java

varunu28 · web-flow · commit cd3c7b9ea579 · 2022-03-21T06:32:01.000+05:30
diff --git a/Medium/Count Collisions on a Road.java b/Medium/Count Collisions on a Road.java
@@ -0,0 +1,20 @@
+class Solution {
+  public int countCollisions(String directions) {
+    int idx = 0;
+    while (idx < directions.length() && directions.charAt(idx) == 'L') {
+      idx++;
+    }
+    int carsFromRight = 0;
+    int collisionCount = 0;
+    while (idx < directions.length()) {
+      if (directions.charAt(idx) == 'R') {
+        carsFromRight++;
+      } else {
+        collisionCount += directions.charAt(idx) == 'S' ? carsFromRight : carsFromRight + 1;
+        carsFromRight = 0;
+      }
+      idx++;
+    }
+    return collisionCount;
+  }
+}
