Create length_of_last_word.cpp

Author: avidLearnerInProgress

length_of_last_word.cpp

@@ -0,0 +1,21 @@
+#include <string.h>
+class Solution {
+private:
+    static inline void rtrim(std::string &s) {
+        s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch) {
+            return !std::isspace(ch);
+        }).base(), s.end());
+    }
+    
+public:
+    int lengthOfLastWord(string s) {
+        if(isspace(s[0]) and s.length() == 1) return 0;
+        int cnt = 0;
+        rtrim(s);
+        for(int i=s.length()-1; i>=0; i--) {
+            if(!isspace(s[i])) cnt++;
+            else break;
+        }
+        return cnt;
+    }
+};