Max Sum of a Pair With Equal Sum of Digits
Try to solve the Max Sum of a Pair With Equal Sum of Digits problem.
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We'll cover the following...
Statement
Given an integer array nums, choose two distinct indices i and j such that the sum of digits of nums[i] is equal to the sum of digits of nums[j]. Among all such valid pairs, return the maximum possible value of nums[i] + nums[j]. If no valid pair exists, return -1.
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