Mateen Hameem

Intern

Practicing since October 20261-day streak

Points

175

Questions solved

0

Projects finished

1

Longest streak

1 days

Badges

• First project

Skill map

Every topic in the question bank, and how much of each one Mateen has worked through.

• Query foundations

  Not started · 0 of 61

  Reading a table and asking it a straight question.

  • Dates0/16
  • Conditional logic0/11
  • Strings0/11
  • Filtering0/7
  • NULL handling0/7
  • Calculations0/5
  • Logical operators0/4

• Combining data

  Not started · 0 of 22

  Putting tables together without losing or duplicating rows.

  • Joins0/13
  • Subqueries0/5
  • Reshaping0/3
  • Deduplication0/1

• Aggregation and windows

  Not started · 0 of 26

  Summarizing, ranking and comparing rows against their group.

  • Aggregations0/13
  • Window functions0/10
  • Ranking0/2
  • Running totals0/1

• Python foundations

  Not started · 0 of 21

  The data structures every Python interview leans on.

  • Arrays0/6
  • Lists0/5
  • Tuples0/3
  • Dictionaries0/3
  • Math0/3
  • Sorting0/1

• Algorithms

  Not started · 0 of 17

  The patterns behind the timed screening rounds.

  • Hashing0/8
  • Two pointers0/4
  • Binary search0/4
  • Sliding window0/1

Projects

• Duolingo · Data Science Project · mediumLearner Personas with Clustering

  Use clustering to discover the kinds of learners using the app, and turn each group into a persona the product team can act on.

  Project pageCode