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How to Solve Split Array into Consecutive Subsequences Problem
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Start Free for WindowsMedium#659
LeetCode ProblemSplit Array into Consecutive Subsequences
You are given an integer array nums that is sorted in non-decreasing order. Determine if it is possible to split nums into one or more subsequences such that both of the following conditions are true: Return true if you can split nums according to the above conditions, or false otherwise. A subsequence of an array is a new array that is formed from the original array by deleting some (can be none) of the elements without disturbing the relative positions of the remaining elements. (i.e., [1,3,5] is a subsequence of [1,2,3,4,5] while [1,3,2] is not).
ArrayHash TableGreedyHeap (Priority Queue)
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Problem Breakdown
Understanding the Split Array into Consecutive Subsequences Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an integer array nums that is sorted in non-decreasing order. Determine if it is possible to split nums into one or more subsequences such that both of the following conditions are true: Return true if you can split nums according to the above conditions, or false otherwise. A subsequence of an array is a new array that is formed from the original array by deleting some (can be none) of the elements without disturbing the relative positions of the remaining elements. (i.e., [1,3,5] is a subsequence of [1,2,3,4,5] while [1,3,2] is not).
MediumProblem #659
LeetCodeSplit Array into Consecutive Subsequences
Related Topics
ArrayHash TableGreedyHeap (Priority Queue)
How Phantom Code Helps
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Examples
# Example 1
Input
nums = [1,2,3,3,4,5]
Output
true
# Example 2
Input
nums = [1,2,3,3,4,4,5,5]
Output
true
# Example 3
Input
nums = [1,2,3,4,4,5]
Output
false
Constraints
1 <= nums.length <= 104
-1000 <= nums[i] <= 1000
nums is sorted in non-decreasing order.
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Solve Split Array into Consecutive Subsequences — You are given an integer array nums that is sorted in non-decreasing order. Dete...
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def solve(input):
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Split Array into Consecutive Subsequences and using Phantom Code during coding interviews.
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Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
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Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Split Array into Consecutive Subsequences type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Split Array into Consecutive Subsequences interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
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How does Phantom Code help when I'm struggling with Split Array into Consecutive Subsequences style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Split Array into Consecutive Subsequences interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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