This solution is O(n) right? is it because java i/o ?
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
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String Concatenation in Java using the String class is O(N) per operation.
Use the StringBuilder class instead.