Sort 0s, 1s, and 2s Problem Statement
You are provided with an integer array/list ARR
of size 'N' which consists solely of 0s, 1s, and 2s. Your task is to write a solution to sort this array/list.
Input:
The first line contains an integer 'T' which denotes the number of test cases. For each test case, the first line contains an integer 'N' denoting the size of the array/list. The second line contains 'N' space-separated integers representing the elements of the array/list.
Output:
For each test case, output the sorted array/list ARR
as space-separated integers. Each test case should be printed on a new line.
Example:
Input:
2
5
0 2 1 2 0
3
2 1 0
Output:
0 0 1 2 2
0 1 2
Constraints:
- 1 <= T <= 10
- 1 <= N <= 5 * 105
- 0 <= ARR[i] <= 2
Note:
Try to implement the solution with a 'Single Scan' approach, meaning you should attempt to sort the array by iterating over it just once. You are required to modify the given array/list directly.
AnswerBot
2d
Sort an array of 0s, 1s, and 2s in linear time with a single scan approach.
Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.
Iterate through the array once and swap elem...read more
Help your peers!
Add answer anonymously...
Top Amazon Software Developer interview questions & answers
Popular interview questions of Software Developer
Top HR questions asked in Amazon Software Developer
Stay ahead in your career. Get AmbitionBox app
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+
Reviews
4 L+
Interviews
4 Cr+
Salaries
1 Cr+
Users/Month
Contribute to help millions
Get AmbitionBox app