How to Solve Smallest Index With Digit Sum Equal to Index Problem
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Smallest Index With Digit Sum Equal to Index
You are given an integer array nums. Return the smallest index i such that the sum of the digits of nums[i] is equal to i. If no such index exists, return -1.
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Understanding the Smallest Index With Digit Sum Equal to Index Problem
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Problem Statement
You are given an integer array nums. Return the smallest index i such that the sum of the digits of nums[i] is equal to i. If no such index exists, return -1.
Smallest Index With Digit Sum Equal to Index
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Examples
nums = [1,3,2]2For nums[2] = 2, the sum of digits is 2, which is equal to index i = 2. Thus, the output is 2.
nums = [1,10,11]1For nums[1] = 10, the sum of digits is 1 + 0 = 1, which is equal to index i = 1. For nums[2] = 11, the sum of digits is 1 + 1 = 2, which is equal to index i = 2. Since index 1 is the smallest, the output is 1.
nums = [1,2,3]-1Since no index satisfies the condition, the output is -1.
Constraints
1 <= nums.length <= 1000 <= nums[i] <= 1000How Interview Coder Helps with Leetcode Problems
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