20240517 Finished

src/problem/mod.rs

@@ -134,3 +134,4 @@ mod p228_summary_ranges;
 mod p56_merge_intervals;
 mod p57_insert_interval;
 mod p452_minimum_number_of_arrows_to_burst_balloons;
+mod p71_simplify_path;

src/problem/p71_simplify_path.rs

@@ -0,0 +1,53 @@
+/**
+ * [71] Simplify Path
+ */
+pub struct Solution {}
+
+
+// submission codes start here
+
+impl Solution {
+    pub fn simplify_path(path: String) -> String {
+        let names = path.split('/');
+        let mut path = vec![];
+
+        for name in names {
+            if name.len() == 0 {
+                continue;
+            }
+
+            if name == "." {
+                continue;
+            } else if name == ".." {
+                path.pop();
+            } else {
+                path.push(name)
+            }            
+        }
+
+        let mut result = String::new();
+
+        for name in path {
+            result.push_str("/");
+            result.push_str(name);
+        }        
+
+        if result.len() == 0 {
+            "/".to_owned()
+        } else {
+            result
+        }
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_71() {
+        assert_eq!("/home".to_owned(), Solution::simplify_path("/home//".to_owned()));
+    }
+}