Write a function that takes a string as input and returns the string reversed.
Example:
Given s = "hello", return "olleh"
class Solution {
public:
string reverseString(string s) {
int i = 0;
int j = s.size() - 1;
while (i < j) {
swap(s[i++], s[j--]);
}
return s;
}
};
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本文标题：LeetCode*344. Reverse String
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