Added Zigzag Conversion Structure

Author: ryanoneill

src/lib.rs

@@ -19,7 +19,7 @@ pub mod add_two_numbers; // 2
 pub mod length_of_longest_substring; // 3 ✓
 pub mod median_of_two_sorted_arrays; // 4
 pub mod longest_palindromic_substring; // 5
-
+pub mod zigzag_conversion; // 6
 pub mod reverse_integer; // 7
 pub mod string_to_integer; // 8
 pub mod palindrome_number; // 9

src/zigzag_conversion.rs

@@ -0,0 +1,54 @@
+/// The string "PAYPALISHIRING" is written in zigzag pattern on a given number
+/// of rows like this:
+///
+/// P   A   H   N
+/// A P L S I I G
+/// Y   I   R
+///
+/// And then read line by line: "PAHNAPLSIIGYIR"
+///
+/// Write the code that will take a string and make this conversion given a
+/// number of rows:
+struct Solution;
+
+impl Solution {
+
+    // TODO: Implement
+    pub fn convert(_s: String, _num_rows: i32) -> String {
+        "".to_string()
+    }
+
+}
+
+#[cfg(test)]
+mod tests {
+    use super::Solution;
+
+    #[ignore]
+    #[test]
+    fn example_1() {
+        let s = "PAYPALISHIRING".to_string();
+        let num_rows = 3;
+        let result = Solution::convert(s, num_rows);
+        assert_eq!(result, "PAHNAPLSIIGYIR");
+    }
+
+    #[ignore]
+    #[test]
+    fn example_2() {
+        let s = "PAYPALISHIRING".to_string();
+        let num_rows = 4;
+        let result = Solution::convert(s, num_rows);
+        assert_eq!(result, "PINALSIGYAHRPI");
+    }
+
+    #[ignore]
+    #[test]
+    fn example_3() {
+        let s = "A".to_string();
+        let num_rows = 1;
+        let result = Solution::convert(s, num_rows);
+        assert_eq!(result, "A");
+    }
+
+}