回答編集履歴
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追記
answer
CHANGED
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@@ -18,4 +18,31 @@
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18
18
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return -1; // なかったら-1
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}
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};
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21
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```
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22
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[つけたし] ハッシュ表使うまでもないか...
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23
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```C++
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24
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#include <string>
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25
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#include <algorithm>
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26
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27
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class Solution {
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28
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public:
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29
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int firstUniqChar(const std::string& s) {
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30
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int hist[256];
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31
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std::fill(hist, hist+256, 0);
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32
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for ( char ch : s ) {
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hist[ch]++;
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}
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35
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for ( int i = 0; i < s.size(); ++i ) {
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36
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if ( hist[s.at(i)] == 1 ) return i;
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37
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}
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return -1;
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}
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};
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#include <iostream>
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43
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int main() {
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Solution s;
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std::cout << s.firstUniqChar("abcdefghijkld") << std::endl;
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}
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48
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```
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