Class Solution
java.lang.Object
g0801_0900.s0842_split_array_into_fibonacci_sequence.Solution
842 - Split Array into Fibonacci Sequence\.
Medium
You are given a string of digits `num`, such as `"123456579"`. We can split it into a Fibonacci-like sequence `[123, 456, 579]`.
Formally, a **Fibonacci-like** sequence is a list `f` of non-negative integers such that:
*
0 <= f[i] < 231
, (that is, each integer fits in a **32-bit** signed integer type),
* `f.length >= 3`, and
* `f[i] + f[i + 1] == f[i + 2]` for all `0 <= i < f.length - 2`.
Note that when splitting the string into pieces, each piece must not have extra leading zeroes, except if the piece is the number `0` itself.
Return any Fibonacci-like sequence split from `num`, or return `[]` if it cannot be done.
**Example 1:**
**Input:** num = "1101111"
**Output:** [11,0,11,11]
**Explanation:** The output [110, 1, 111] would also be accepted.
**Example 2:**
**Input:** num = "112358130"
**Output:** []
**Explanation:** The task is impossible.
**Example 3:**
**Input:** num = "0123"
**Output:** []
**Explanation:** Leading zeroes are not allowed, so "01", "2", "3" is not valid.
**Constraints:**
* `1 <= num.length <= 200`
* `num` contains only digits.-
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Solution
public Solution()
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Method Details
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splitIntoFibonacci
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