Step 3: Solve Problems on Arrays [Easy -> Medium -> Hard]›Easy
Check if the Array is Sorted II
EasyFunction: checkIfTheArrayIsSortedIi()
ASCI Mission Breakdown • Simple as Hell
"Master Check if the Array is Sorted II: Take `nums` (number[]), execute an optimal easy strategy, and return number[] with clean edge-case handling."
Real-World Metaphor:
Think of Check if the Array is Sorted II as an everyday real-world challenge: you receive input data, inspect its elements in sequence without making unnecessary duplicate passes, and transform the collection to reach the exact target without wasting computer memory.
Interactive Visual WalkthroughARRAY-POINTERS
Step 1 / 3
Check if the Array is Sorted II State Pipeline
start
5
[0]
2
[1]
3
[2]
1
[3]
Memory Notepad / State Tracker
Status:Initialized
Mode:Scanning
Evaluating
1. Initialize State for Check if the Array is Sorted II
Load inputs and initialize algorithmic registers.
How to Think About This (Mental Model)
Unpack the problem parameters (`nums` (number[])) and clarify what is given vs what must be returned.
Identify the optimal data structure or pattern (e.g. pointers, hash map, or stack) to avoid redundant recalculations.
Walk through state transitions, handle edge cases (empty collections, single items, negative numbers), and return the verified result.
Given an array of integers `nums`, sort the array in ascending order using the **Check if the Array is Sorted II** technique.
Return the sorted array.
Examples
Example 1
Input: nums = [5,2,3,1]
Output: [1,2,3,5]
Example 2
Input: nums = [5,1,1,2,0,0]
Output: [0,0,1,1,2,5]
Constraints
1 <= nums.length <= 5 * 10^4
-5 * 10^4 <= nums[i] <= 5 * 10^4
Topic Tags:
Solve Problems on Arrays [Easy -> Medium -> Hard]EasycheckIfTheArrayIsSortedIi