Challenge No. 143: List the numbers which are Harshad number (also known as Niven number or Multidigital number).
Solved using: Python in Excel.
MAP
Applies a function to each element of one or more arrays in Excel.
Next Palindrome Number
Challenge No. 141: Palindrome number is that which is same even when read backwards.
Solved using: Python in Excel.
Common Letters Sorted
Challenge No. 140: List the common letters between Word1 and Word2 and sort them alphabetically.
Solved using: Power Query (List.Distinct, Table.AddColumn).
Vowel End and Start Words
Challenge No. 139: List those sentences which contain any pair of words where first word ends with vowel and next word starts with vowel.
Solved using: Power Query.
Top Initial Letters Count
Challenge No. 138: Find the top 5 highest occurring starting alphabets of words in US Presidents columns.
Solved using: Python in Excel.
Unique Letters Per Word
Challenge No. 137: List those strings whose words contain only unique letters.
Solved using: Power Query (Table.AddColumn).
Merge! Part 1
Challenge No. 114: In Question Table 1, the dates and product IDs are provided.
Solved using:Excel (FILTER, HSTACK, IFERROR), Google Sheets, Power Query (Text.Split, Table.AddColumn), Python, Python in Excel, R, and SQL.
Mask Specific Whole Words
Challenge No. 136: Mask the string with asterisks if a word given in Words column appears in that row.
Solved using: Power Query.
Sum Negative Numbers Only
Challenge No. 135: Extract the negative numbers and sum them from the given strings.
Solved using: Python in Excel.
Add Suffix to Duplicates
Challenge No. 134: If an animal appears more than once, then that animal’s name should be suffixed with 1, 2, 3.
Solved using: SQL.