Compute time complexity of Insertion Sort algorithm using Python language implementation

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Compute time complexity of Insertion Sort algorithm using Python language implementation. Explain your work

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How to calculate the time complexity in seconds/ minutes for this Insertion Sort algorithm implemented in Python. Time Complexity of this algorithm is O(N2). 

# Function to do insertion sort
def insertionSort(arr):

    # Traverse through 1 to len(arr)
    for i in range(1, len(arr)):

        key = arr[i]

        j = i-1
        while j >=0 and key < arr[j] :
                arr[j+1] = arr[j]
                j -= 1
        arr[j+1] = key


arr = [12, 11, 13, 5, 6]
insertionSort(arr)
lst = [] #empty list to store sorted elements
print("Sorted array is : ")
for i in range(len(arr)):
    lst.append(arr[i])   
print(lst)

 

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