easiest solution with explanation
IntuitionThis function calculates a custom value for a string s by iterating through each character and computing a weighted sum. The weight for each character
# Intuition
This function calculates a custom value for a string s by iterating through each character and computing a weighted sum. The weight for each character is determined by its reversed alphabetical position ('a' being 26, 'b' being 25, and so on) and a sequential multiplier k. The result aggregates these weighted values.

The main intuition is to compute a score based on reversing the alphabetical order of characters and applying an increasing positional weight.

# Approach
Initialization: Start with a multiplier k initialized to 1.
Initialize ans to 0, which will store the final computed result.

Iterate Through the String: Convert the string into a character array using toCharArray().

For each character ch: Calculate its reversed alphabetical value using the expression (26 - (ch - 'a')).
Multiply this value by the current multiplier k and add it to ans.
Increment the multiplier k for the next character.

Return the Result: Once the iteration is complete, return the calculated value stored in ans.

# Complexity
- Time Complexity: $$O(n)$$, where n is the length of the string. This is because each character is processed exactly once in a single loop.

- Space Complexity: $$O(1)$$, as the computation only uses a few integer variables and no additional data structures.

# Code
```java []
class Solution {
    public int reverseDegree(String s) {
        int k=1;
        int ans=0;
        for(char ch : s.toCharArray())
        {
            ans+=(26-(ch-'a'))*k++;
        }
        return ans;
    }
}
```
['String', 'Simulation', 'Java']