Improved task 2011.

Author: javadev

src/main/java/g2001_2100/s2011_final_value_of_variable_after_performing_operations/readme.md

@@ -4,70 +4,62 @@ Easy
 
 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* .
+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
 
-**Explanation:**
+**Explanation:** The operations are performed as follows:
 
-The operations are performed as follows: 
+Initially, X = 0.
 
-Initially, X = 0. 
+--X: X is decremented by 1, X = 0 - 1 = -1.
 
---X: X is decremented by 1, X =  0 - 1 = -1.
+X++: X is incremented by 1, X = -1 + 1 = 0.
 
-X++: X is incremented by 1, X = -1 + 1 = 0. 
-
-X++: X is incremented by 1, X = 0 + 1 = 1.
+X++: X is incremented by 1, X = 0 + 1 = 1.
 
 **Example 2:**
 
 **Input:** operations = ["++X","++X","X++"]
 
 **Output:** 3
 
-**Explanation:**
-
-The operations are performed as follows: 
+**Explanation:** The operations are performed as follows:
 
-Initially, X = 0. 
+Initially, X = 0.
 
-++X: X is incremented by 1, X = 0 + 1 = 1. 
+++X: X is incremented by 1, X = 0 + 1 = 1.
 
 ++X: X is incremented by 1, X = 1 + 1 = 2.
 
- X++: X is incremented by 1, X = 2 + 1 = 3.
+X++: X is incremented by 1, X = 2 + 1 = 3.
 
 **Example 3:**
 
 **Input:** operations = ["X++","++X","--X","X--"]
 
 **Output:** 0
 
-**Explanation:**
+**Explanation:** The operations are performed as follows:
 
-The operations are performed as follows: 
+Initially, X = 0.
 
-Initially, X = 0. 
-
-X++: X is incremented by 1, X = 0 + 1 = 1. 
+X++: X is incremented by 1, X = 0 + 1 = 1.
 
 ++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.
+--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--"`.
+*  `1 <= operations.length <= 100`
+*  `operations[i]` will be either `"++X"`, `"X++"`, `"--X"`, or `"X--"`.