Merge pull request #2226 from itopstack/main

Create 0392-is-subsequence.swift

Author: tahsintunan

swift/0392-is-subsequence.swift

@@ -0,0 +1,24 @@
+ // Time: O(s + t)
+ // Space: O(s)
+
+class Solution {
+    func isSubsequence(_ s: String, _ t: String) -> Bool {
+        if s.isEmpty {
+            return true
+        }
+
+        var s = Array(s)
+        var i = 0
+
+        for c in t {
+            if c == s[i] {
+                i += 1
+                if i == s.count {
+                    return true
+                }
+            }
+        }
+
+        return false
+    }
+}