20240425 Finished

src/problem/mod.rs

@@ -112,3 +112,4 @@ mod p151_reverse_words_in_a_string;
 mod p28_find_the_index_of_the_first_occurrence_in_a_string;
 mod p68_text_justification;
 mod p125_valid_palindrome;
+mod p392_is_subsequence;

src/problem/p392_is_subsequence.rs

@@ -0,0 +1,40 @@
+/**
+ * [392] Is Subsequence
+ */
+pub struct Solution {}
+
+
+// submission codes start here
+
+impl Solution {
+    pub fn is_subsequence(s: String, t: String) -> bool {
+        let t : Vec<char> = t.chars().collect();
+
+        let mut pos = 0;
+        for c in s.chars() {
+            while pos < t.len() && t[pos] != c {
+                pos += 1;
+            }
+
+            if pos >= t.len() {
+                return false;
+            }
+
+            pos += 1;
+        }
+
+        true
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_392() {
+        assert!(Solution::is_subsequence("abc".to_owned(), "ahbgdc".to_owned()));
+    }
+}