What is the time complexity of the following code? public boolean isBalanced(String exp) { int len = exp.length(); Stack stk = new Stack(); for(int i = 0; i < len; i++) { char ch = exp.charAt(i); if (ch == '(') stk.push(i); else if (ch == ')') { if(stk.peek() == null) { return false; } stk.pop(); } } return true; } a) O(logn) b) O(n) c) O(1) d) O(nlogn)
What is the time complexity of the following code? public boolean isBalanced(String exp) { int len = exp.length(); Stack stk = new Stack(); for(int i = 0; i < len; i++) { char ch = exp.charAt(i); if (ch == '(') stk.push(i); else if (ch == ')') { if(stk.peek() == null) { return false; } stk.pop(); } } return true; } a) O(logn) b) O(n) c) O(1) d) O(nlogn)
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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What is the time complexity of the following code?
public boolean isBalanced(String exp) { int len = exp.length(); Stack<Integer> stk = new Stack<Integer>(); for(int i = 0; i < len; i++) { char ch = exp.charAt(i); if (ch == '(') stk.push(i); else if (ch == ')') { if(stk.peek() == null) { return false; } stk.pop(); } } return true; }
a) O(logn)
b) O(n)
c) O(1)
d) O(nlogn)
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