Solution: Additive Number
Explore how to solve the additive number problem using backtracking. Understand the process of identifying sequences where each number is the sum of the two preceding ones, while managing constraints like no leading zeros. Gain the ability to implement a recursive solution that efficiently checks all possible partitions in the digit string and determine if it can form a valid additive sequence.
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Statement
An additive number is a string whose digits can be partitioned into an additive sequence.
A valid additive sequence contains at least three numbers, where every number after the first two is equal to the sum of the two immediately preceding numbers.
Given a string, num, containing only digits, determine whether it represents an additive number. Return TRUE if a valid additive sequence can be formed from the digits of num, and FALSE otherwise.
Note: Numbers in the additive sequence cannot have leading zeros. For example, the sequences
1, 2, 03and1, 02, 3are both invalid.
Constraints:
num.length...