remove duplicates from sorted array python code example

Example 1: python remove duplicates from list

mylist = ["a", "b", "b", "c", "a"]
mylist = sorted(set(mylist))
print(mylist)

Example 2: python remove duplicates

if mylist:
    mylist.sort()
    last = mylist[-1]
    for i in range(len(mylist)-2, -1, -1):
        if last == mylist[i]:
            del mylist[i]
        else:
            last = mylist[i]
# Quicker if all elements are hashables:
mylist = list(set(mylist))

Example 3: remove duplicates in sorted array python

j = 0

// traverse elements of arr
for i=0 to n-2
    // if ith element is not equal to (i+1)th element of arr, then store ith value in arr[j]
    if arr[i] != arr[i+1]
        arr[j] = arr[i]
        j += 1

// store last value of arr in temp
arr[j] = arr[n-1]
j += 1

// print first j elements of array arr
for i=0 to j-1 
    print arr[i]

Example 4: remove duplicates in sorted array python

# function for removing duplicates
def removeDuplicate(arr, n):
    j = 0
    
    # traverse elements of arr
    for i in range(0, n-1): 
        # if ith element is not equal to (i+1)th element, then store ith value in arr[j]
        if (arr[i] != arr[i+1]):
            arr[j] = arr[i]
            j = j+1

    # store last value of arr in arr[j]
    arr[j] = arr[n-1]
    j = j+1
    
    # print first j elements of array arr
    for i in range(0, j):
        print("%d"%(arr[i]), end = " ")

arr = [1, 3, 5, 5, 7, 9]
n = len(arr)
# calling function when number of elements in array is greater than 1
if (n > 1):
    removeDuplicate(arr, n)