Create di-string-match.cpp

Author: kamyu104

C++/di-string-match.cpp

@@ -0,0 +1,21 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    vector<int> diStringMatch(string S) {
+        vector<int> result;
+        int left = 0, right = S.length();
+        for (const auto& c : S) {
+            if (c == 'I') {
+                result.emplace_back(left);
+                ++left;
+            } else {
+                result.emplace_back(right);
+                --right;
+            }
+        }
+        result.emplace_back(left);
+        return result;
+    }
+};