s0028

src/s0028_find_the_index_of_the_first_occurrence_in_a_string.cpp

@@ -0,0 +1,18 @@
+#include "s0028_find_the_index_of_the_first_occurrence_in_a_string.hpp"
+
+int Solution::strStr(string haystack, string needle) {
+  int haystackLen = haystack.length();
+  int needleLen = needle.length();
+  for (int i{0}; i < haystackLen; ++i) {
+    for (int j{0}, iTmp = i; j < needleLen; ++j) {
+      if (haystack[iTmp] != needle[j]) {
+        break;
+      } else if (j == needleLen - 1) {
+        return i;
+      } else {
+        ++iTmp;
+      }
+    }
+  }
+  return -1;
+}