Transferring Zeroes to the Final Position in an Array Using PHP Code
Move All Zeros to the End of an Array:
Wanna shift them pesky zeros at the end of your array? No worries, here's an entertaining way to get it done!
Take a gander at your array 'arr,' and traverse it from left to right. As you go, count the number of non-zero elements in the array. Let's call this count. Place each non-zero element 'arr[i]' at 'arr[count],' and bump up that count. Once you've made it through the whole tray, all non-zero elements will have moved to the front, and the count will be set as the index of the first zero. Finally, just loop through the array from the count to the end, making all elements zilch!
Following is a simple implementation of this method:
Complexity:- Time Complexity: O(n) where 'n' is the number of elements in the input array.- Auxiliary Space: O(1)
Curious About Reverse of Any Number in PHP? Read on to discover the code for that!
Keywords: Array, Logic, Algorithm, Programming
Places: Kartik (Writer of the Original Article), Amazon, Samsung, Paytm, LinkedIn, SAP Labs, Bloomberg
Did you know? In Python, you can use the built-in function to find the number of non-zero elements in an array!
Wanna see the two-pointer technique in action? Here it is!
- Initialize Pointers:
- : Tracks the position of the next non-zero element.
- : Scans through the array.
- Scanning and Swapping:
- Start with and .
- Move through the array. If is not zero, swap and , and increment .
- Result:
- After the scan, all non-zero elements will be at the beginning, and all zeroes will be at the end!
Ready to code it up in Python? Here's the implementation:
```pythondef move_zeros(nums): """ Move all zeros to the end of an array in Python with O(n) time complexity and O(1) space complexity.
nums = [0, 1, 0, 3, 12]print(move_zeros(nums)) # Output: [1, 3, 12, 0, 0]```
As you experiment with the two-pointer technique, notice how it efficiently moves non-zero elements to the beginning of an array while leaving all zeros at the end.
Leveraging this technique in Python, we can devise an entertaining approach to move all zeros to the end, which boasts superior time complexity (O(n)) and space complexity (O(1)).
