leetcode 1374. Generate a String With Characters That Have Odd Counts

问题来自 leetcode 1374. Generate a String With Characters That Have Odd Counts

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class Solution {
public:
    string generateTheString(int n) {
        if (n % 2 == 0) {
            return string(n-1, 'a') + string(1, 'b');
        } else {
            return string(n, 'a');
        }
    }
};