diff --git a/src/main/java/com/fishercoder/solutions/_28.java b/src/main/java/com/fishercoder/solutions/_28.java
index 582899b0dc..8e0323ad32 100644
--- a/src/main/java/com/fishercoder/solutions/_28.java
+++ b/src/main/java/com/fishercoder/solutions/_28.java
@@ -17,4 +17,21 @@ public int strStr(String haystack, String needle) {
}
}
+ public static class Solution2 {
+ public int strStr(String haystack, String needle) {
+
+ int n = needle.length();
+ int h = haystack.length();
+
+ for (int i = 0; i <= h - n; i++) {
+ for (int j = 0; j < n && haystack.charAt(i + j) == needle.charAt(j); j++) {
+ if (j == n - 1) {
+ return i;
+ }
+ }
+ }
+ return -1;
+ }
+ }
+
}
diff --git a/src/test/java/com/fishercoder/_28Test.java b/src/test/java/com/fishercoder/_28Test.java
index ce9378a6f2..22f42d6886 100644
--- a/src/test/java/com/fishercoder/_28Test.java
+++ b/src/test/java/com/fishercoder/_28Test.java
@@ -8,20 +8,25 @@
public class _28Test {
private static _28.Solution1 solution1;
+ private static _28.Solution2 solution2;
@Before
public void setupForEachTest() {
solution1 = new _28.Solution1();
+ solution2 = new _28.Solution2();
}
@Test
public void test1() {
assertEquals(0, solution1.strStr("a", ""));
+ assertEquals(0, solution2.strStr("sadbutsad", "sad"));
}
@Test
public void test2() {
+
assertEquals(-1, solution1.strStr("mississippi", "a"));
+ assertEquals(8, solution2.strStr("leetcodea", "a"));
}
@Test
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