Software Engineer

Step 1: Read the input string. 

Step 2: Initialize variables. For example collisions: to keep track of the total number of collisions. moveRight: to count consecutive R cars moving right. stationaryFound: a boolean flag to check if any stationary car (S) is encountered. 

Step 3: Iterate through each car direction. Used a for loop to iterate through the directions string. 

Step 4: Handle R cars (moving right). If the car is R, increment moveRight to track right-moving cars. 

Step 5: Handle L cars (moving left). If a L car is found: If there were previous R cars, they collide. Add moveRight + 1 collisions (current L + all previous R cars). Reset moveRight to 0. If a stationary car was previously found, add 1 collision (L hits S). 

Step 6: Handle S cars (stationary). Add all previous R cars as collisions. Reset moveRight to 0. Set stationaryFound to true to track future L cars colliding with S. 

Step 7: Print the result.Display the total number of collisions using System.out.print(collisions).

Step 1: Import necessary libraries: java.util.*. 

Step 2: Define the wiggleMaxLength function to calculate the longest wiggle subsequence. 

Step 3: Handle edge cases: return the size if the list has fewer than 2 elements. 

Step 4: Initialize variables: prevDiff = 0 and count = 1. 

Step 5: Iterate through the list, calculating the difference between consecutive numbers. 

Step 6: Check for alternating signs: If positive follows negative or vice versa, increment count. Update prevDiff with the current difference. 

Step 7: Return the final count of the longest wiggle subsequence.