Solved Is Subsequence

leetcode/IsSubsequence.java

@@ -0,0 +1,24 @@
+// LeetCode 392. Is Subsequence
+
+public class isSubsequence{
+    public boolean isSubsequence(String s, String t) {
+        if(s.length() == 0){
+            return true;
+        }
+        int sPointer = 0;
+        int tPointer = 0;
+
+        // make sure it iterate until the end
+        while (tPointer < t.length()) {
+            if (s.charAt(sPointer) == t.charAt(tPointer)) {
+                sPointer++;
+                if (sPointer == s.length()) { // reach the end of s means we have found every characters
+                    return true;
+                }
+            }
+            tPointer++;
+        }
+        return false;
+
+    }
+}