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-rw-r--r--other/first_unique_char_string.cpp22
1 files changed, 22 insertions, 0 deletions
diff --git a/other/first_unique_char_string.cpp b/other/first_unique_char_string.cpp
new file mode 100644
index 0000000..5f55821
--- /dev/null
+++ b/other/first_unique_char_string.cpp
@@ -0,0 +1,22 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ int firstUniqChar(string s) {
+ unordered_map<char, pair<int, int>> ump;
+ int idx = s.size();
+ for (int i = 0; i < s.size(); i++) {
+ ump[s[i]].first++;
+ ump[s[i]].second = i;
+ }
+ for (const auto &[c, p] : ump)
+ if (p.first == 1)
+ idx = min(idx, p.second);
+ return idx == s.size() ? -1 : idx;
+ }
+};
+
+int main() {
+ Solution obj;
+ cout << obj.firstUniqueChar("loveleetcode");
+}