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remove duplicates from sorted array

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let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [...new Set(chars)];

console.log(uniqueChars);

output:
[ 'A', 'B', 'C' ]
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4.29
7
Nguyễn Cao Cường 115 points 

                                    // Java
public int removeDuplicates(int[] nums) {
    if (nums.length == 0) return 0;
    int i = 0;
    for (int j = 1; j < nums.length; j++) {
        if (nums[j] != nums[i]) {
            i++;
            nums[i] = nums[j];
        }
    }
    return i + 1;
}

4.29 (7 Votes)
0
4.2
12
Masoodahm 75 points 

                                    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]

4.2 (10 Votes)
0
4.75
4
Qonf 75 points 

                                    def remove_duplicates(nums: [int]) -> int:
    cnt = 1
    for index in range(len(nums) - 1):
        if nums[index] != nums[index + 1]:
            nums[cnt] = nums[index + 1]
            cnt += 1
    print(cnt)

4.75 (4 Votes)
0
3.83
6
Bruce Carney 85 points 

                                    def remove_duplicate(nums: [int]) -> int:
  nums[:] = sorted(set(nums))
  return len(nums)

3.83 (6 Votes)
0
3.75
4
Lisa Chan 115 points 

                                    # 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)

3.75 (4 Votes)
0
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