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-rw-r--r--implement_strstr.cpp19
1 files changed, 19 insertions, 0 deletions
diff --git a/implement_strstr.cpp b/implement_strstr.cpp
new file mode 100644
index 0000000..4c888c2
--- /dev/null
+++ b/implement_strstr.cpp
@@ -0,0 +1,19 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ int strStr(string haystack, string needle) {
+ int m = haystack.size(), n = needle.size();
+ for (int i = 0; i <= m - n; i++) {
+ int j;
+ for (j = 0; j < n; j++)
+ if (haystack[i + j] != needle[j])
+ break;
+ if (j == n)
+ return i;
+ }
+ return -1;
+ }
+};
+
+int main() {}