算法与数据结构学习

Chapter4/test1.mjs

@@ -0,0 +1,20 @@
+import Stack from "./stack.mjs";
+// 找出缺失的括号
+function findMissingParentheses(expression) {
+  const stack = new Stack();
+  const expressionList = expression.split('');
+  for (let i = 0; i < expressionList.length; i++) { 
+    const char = expressionList[i];
+    if (char === '(') {
+      stack.push(i);
+    }
+    if (char === ')') {
+      stack.pop();
+    }
+  }
+  if (stack.length() > 0) {
+    console.log('missing parent index:', stack.pop());
+  }
+}
+
+findMissingParentheses('2.3 + 23 / 12 + (3.14159 x 0.24')