2011. Final Value of Variable After Performing Operations

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String Simulation

Time: O(n)

Space: O(1)

Intuition

Simple accumulation: gain adds to score, lose subtracts. Return maximum score at any point.

Algorithm

1For each operation: if gain, score += point. If lose, score -= point. Track max score.

Common Pitfalls

•Score can go negative but we track maximum at any point, not final score.

2011.cs

// Approach: Count '+' increments and '-' decrements; return difference.
// Time: O(n) Space: O(1)

public class Solution
{
    public int FinalValueAfterOperations(string[] operations)
    {
        int result = 0;
        foreach (string operation in operations)
        {
            if (operation[1] == '+')
                result += 1;
            else
                result -= 1;
        }
        return result;
    }
}

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