Merge pull request neetcode-gh#1404 from loczek/71-Simplify-Path

Create: 71-Simplify-Path.ts

Author: dissesmac

typescript/71-Simplify-Path.ts

@@ -0,0 +1,21 @@
+function simplifyPath(path: string): string {
+    const stack: string[] = [];
+    let cur = '';
+
+    for (const c of path + '/') {
+        if (c === '/') {
+            if (cur === '..') {
+                if (stack.length > 0) {
+                    stack.pop();
+                }
+            } else if (cur != '' && cur != '.') {
+                stack.push(cur);
+            }
+            cur = '';
+        } else {
+            cur += c;
+        }
+    }
+
+    return '/' + stack.join('/');
+}