#2011: description update

Author: vetalapo

c-sharp/Problems/arrays-and-hashing/FinalValueOfVariableAfterPerformingOperations.cs

@@ -3,13 +3,13 @@
  * Final Value of Variable After Performing Operations
  **
  * There is a programming language with only four operations and one variable X:
- *   ++X and X++ increments the value of the variable X by 1.
- *   --X and X-- decrements the value of the variable X by 1.
+ *   • ++X and X++ increments the value of the variable X by 1.
+ *   • --X and X-- decrements the value of the variable X by 1.
  *
  * Initially, the value of X is 0.
  * Given an array of strings operations containing a list of operations,
  * return the final value of X after performing all the operations.
- * 
+ *
  * Example 1:
  *   Input: operations = ["--X","X++","X++"]
  *   Output: 1
@@ -19,7 +19,6 @@
  *     X++: X is incremented by 1, X = -1 + 1 =  0.
  *     X++: X is incremented by 1, X =  0 + 1 =  1.
  *
- *
  * Example 2:
  *   Input: operations = ["++X","++X","X++"]
  *   Output: 3
@@ -29,7 +28,6 @@
  *     ++X: X is incremented by 1, X = 1 + 1 = 2.
  *     X++: X is incremented by 1, X = 2 + 1 = 3.
  *
- *
  * Example 3:
  *   Input: operations = ["X++","++X","--X","X--"]
  *   Output: 0
@@ -39,7 +37,11 @@
  *     ++X: X is incremented by 1, X = 1 + 1 = 2.
  *     --X: X is decremented by 1, X = 2 - 1 = 1.
  *     X--: X is decremented by 1, X = 1 - 1 = 0.
- * 
+ *
+ * Constraints:
+ *   • 1 <= operations.length <= 100
+ *   • operations[i] will be either "++X", "X++", "--X", or "X--".
+ *
  * Hint 1: There are only two operations to keep track of.
  * Hint 2: Use a variable to store the value after each operation.
  **