diff options
Diffstat (limited to 'reverse-string-ii/src')
-rw-r--r-- | reverse-string-ii/src/main.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/reverse-string-ii/src/main.rs b/reverse-string-ii/src/main.rs new file mode 100644 index 0000000..883f24f --- /dev/null +++ b/reverse-string-ii/src/main.rs @@ -0,0 +1,21 @@ +fn main() { + println!("Hello, world!"); + let tests = [ + ("abcdefg", 2, "bacdfeg"), + ("abcd", 2, "bacd") + ]; + + for test in tests { + println!("{:?} {} is {:?} should be {:?}", test.0, test.1, + Solution::reverse_str(test.0.to_string(), test.1), test.2); + } +} + +struct Solution; + +impl Solution { + pub fn reverse_str(mut s: String, k: i32) -> String { + unsafe { s.as_bytes_mut() }.chunks_mut(k as usize).step_by(2).for_each(|x| x.reverse()); + s + } +} |