Thanks for testing Magicoder! I tried “Implement an in place quicksort” with temperature 0 using the demo and here is the output I get. I haven’t checked every detail but it looks correct:
Here is a Python implementation of an in-place quicksort:
def partition(arr, low, high):
i = (low-1)
pivot = arr[high]
for j in range(low, high):
if arr[j] <= pivot:
i = i+1
arr[i], arr[j] = arr[j], arr[i]
arr[i+1], arr[high] = arr[high], arr[i+1]
return (i+1)
def quickSort(arr, low, high):
if len(arr) == 1:
return arr
if low < high:
pi = partition(arr, low, high)
quickSort(arr, low, pi-1)
quickSort(arr, pi+1, high)
arr = [10, 7, 8, 9, 1, 5]
n = len(arr)
quickSort(arr, 0, n-1)
print("Sorted array is:", arr)
This code first defines a partition function that takes an array and two indices, low and high, and rearranges the elements of the array so that all elements less than the pivot (the last element in the array) come before it, and all elements greater than the pivot come after it.
Then it defines a quickSort function that takes an array and two indices, low and high, and sorts the array in-place using the partition function. If the array has more than one element, it recursively sorts the subarrays to the left and right of the pivot.
Finally, it tests the function with an array of integers.
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Here is a Python implementation of an in-place quicksort:
This code first defines a partition function that takes an array and two indices, low and high, and rearranges the elements of the array so that all elements less than the pivot (the last element in the array) come before it, and all elements greater than the pivot come after it.
Then it defines a quickSort function that takes an array and two indices, low and high, and sorts the array in-place using the partition function. If the array has more than one element, it recursively sorts the subarrays to the left and right of the pivot.
Finally, it tests the function with an array of integers.