mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
31 lines
1.2 KiB
HTML
31 lines
1.2 KiB
HTML
<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code>. You have to find the <strong>maximum</strong> sum of a pair of numbers from <code>nums</code> such that the maximum <strong>digit </strong>in both numbers are equal.</p>
|
|
|
|
<p>Return <em>the maximum sum or</em> <code>-1</code><em> if no such pair exists</em>.</p>
|
|
|
|
<p> </p>
|
|
<p><strong class="example">Example 1:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> nums = [51,71,17,24,42]
|
|
<strong>Output:</strong> 88
|
|
<strong>Explanation:</strong>
|
|
For i = 1 and j = 2, nums[i] and nums[j] have equal maximum digits with a pair sum of 71 + 17 = 88.
|
|
For i = 3 and j = 4, nums[i] and nums[j] have equal maximum digits with a pair sum of 24 + 42 = 66.
|
|
It can be shown that there are no other pairs with equal maximum digits, so the answer is 88.</pre>
|
|
|
|
<p><strong class="example">Example 2:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> nums = [1,2,3,4]
|
|
<strong>Output:</strong> -1
|
|
<strong>Explanation:</strong> No pair exists in nums with equal maximum digits.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
<p><strong>Constraints:</strong></p>
|
|
|
|
<ul>
|
|
<li><code>2 <= nums.length <= 100</code></li>
|
|
<li><code>1 <= nums[i] <= 10<sup>4</sup></code></li>
|
|
</ul>
|