Daily LeetCode – day0147 2011. Final Value of Variable After Performing Operations

// 2011. Final Value of Variable After Performing Operations
class Solution {
    public int finalValueAfterOperations(String[] operations) {
        int ans = 0;
        for (String operation : operations) {
            if (operation.charAt(1) == '+') {
                ++ans;
            } else {
                --ans;
            }
        }
        return ans;
    }
}

学习笔记：
困难题之后果然就是简单题，这道题真是一道水题。
完全不用考虑++c和c++的区别，就看中间这一位是啥。