C/C++教程

1290. Convert Binary Number in a Linked List to Integer

本文主要是介绍1290. Convert Binary Number in a Linked List to Integer,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!

This is a super easy problem. Time Compexity O(n), Space Complexity O(n)

    int res = 0;
    public int getDecimalValue(ListNode head) {
        if(head==null)
            return res;
        res = res*2+head.val;
        return getDecimalValue(head.next);
    }

 

    int res = 0;
    public int getDecimalValue(ListNode head) {
        while(head!=null){
            int val= head.val;
            res= res*2+val;
            head=head.next;
        }
        return res;
    }

 

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