feat: 2025-10-30打卡

2025-10-30 16:31:25 +08:00
parent b897d019fa
commit 71664a10cc
3 changed files with 135 additions and 0 deletions
--- a/71.simplify-path.java
+++ b/71.simplify-path.java
@@ -0,0 +1,34 @@
+/*
+ * @lc app=leetcode id=71 lang=java
+ *
+ * [71] Simplify Path
+ */
+
+// @lc code=start
+class Solution {
+    public String simplifyPath(String path) {
+        String[] dirs = path.split("/");
+        ArrayList<String> stack = new ArrayList<>();
+        for(String dir: dirs) {
+            if(dir.isEmpty() || dir.equals(".")) {
+                continue;
+            } else if(dir.equals("..")) {
+                if(!stack.isEmpty()) {
+                    stack.removeLast();
+                }
+            } else {
+                stack.addLast(dir);
+            }
+        }
+        if(stack.isEmpty()) {
+            return "/";
+        }
+        StringBuilder sb = new StringBuilder();
+        for(String dir: stack) {
+            sb.append("/").append(dir);
+        }
+        return sb.toString();
+    }
+}
+// @lc code=end
+