solve(3174): implement solution with stack

Author: kallydev

src/solutions/_3174_clear_digits.rs

@@ -0,0 +1,23 @@
+use crate::solutions::Solution;
+
+impl Solution {
+    pub fn clear_digits(s: String) -> String {
+        let mut stack = String::new();
+
+        for c in s.chars() {
+            if c.is_ascii_digit() {
+                stack.pop();
+            } else {
+                stack.push(c);
+            }
+        }
+
+        stack
+    }
+}
+
+#[test]
+fn test() {
+    assert_eq!(Solution::clear_digits("abc".to_owned()), "abc");
+    assert_eq!(Solution::clear_digits("cb34".to_owned()), "");
+}

src/solutions/mod.rs

@@ -5,5 +5,6 @@ pub mod _0026_remove_duplicates_from_sorted_array;
 pub mod _0027_remove_element;
 pub mod _1848_minimum_distance_to_the_target_element;
 pub mod _3046_split_the_array;
+pub mod _3174_clear_digits;
 
 pub struct Solution {}