How do I delete duplicates in Excel but keep one?

Tip: You also can remove all duplicates but keep one with Select Duplicate & Unique Cells like this: Select all the unique values including the first duplicates, and then copy them by pressing Ctrl + C and paste to another location by Ctrl + V.

How do I remove duplicates from a list?

Approach:
  1. Get the ArrayList with duplicate values.
  2. Create a LinkedHashSet from this ArrayList. This will remove the duplicates.
  3. Convert this LinkedHashSet back to Arraylist.
  4. The second ArrayList contains the elements with duplicates removed.

Is there a remove duplicates function in Excel?

The Remove Duplicates command is located in the ‘Data Tools’ group, within the Data tab of the Excel ribbon. Select any cell within the data set that you want to remove the duplicates from, and click on the Remove Duplicates button. … In the example spreadsheet above, we only have one column of data (the ‘Name’ field).

How do I remove duplicates from multiple columns in Excel?

Remove Duplicates from Multiple Columns in Excel
  1. Select the data.
  2. Go to Data –> Data Tools –> Remove Duplicates.
  3. In the Remove Duplicates dialog box: If your data has headers, make sure the ‘My data has headers’ option is checked. Select all the columns except the Date column.

How do I remove duplicates from a list without changing the order?

Python List: Remove Duplicates and Keep the Order
  1. Method 1 – For Loop.
  2. Method 2 – List Comprehension.
  3. Method 3 – Sorted Set.
  4. Method 4 – Dictionary fromkeys()
  5. Method 5 – more-itertools.
  6. Method 6 – NumPy unique()
  7. Method 7 – pandas unique()
  8. Summary.