Daily practice

Python Problem of the Day

One coding problem a day from the DSA 150 sheet: easy on Monday and Tuesday, medium from Wednesday to Friday, hard at the weekend. A new problem appears at midnight India time.

Today · Mon, Nov 9Easy

Ways to climb a staircase

Topic: Dynamic Programming (1D)

Solve in the editor

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Past 30 days

Missed a day? Every earlier problem is still open to solve.

Sun, Nov 8Fewest refuel stopsHard
Sat, Nov 7Shortest round trip through every depotHard
Fri, Nov 6Stack with minimumMedium
Thu, Nov 5Search on a rotated shelfMedium
Wed, Nov 4Fewest coinsMedium
Tue, Nov 3Best loot without neighboursEasy
Mon, Nov 2Count a value in a listEasy
Sun, Nov 1Exactly K different lettersHard
Sat, Oct 31Count how often a pattern hides in a wordHard
Fri, Oct 30Words with the same lettersMedium
Thu, Oct 29Look up a code in a sorted gridMedium
Wed, Oct 28Smallest truck for the parcelsMedium
Tue, Oct 27Total of the first n ordersEasy
Mon, Oct 26Reverse a wordEasy
Sun, Oct 25Most events attendedHard
Sat, Oct 24Pairs with more than doubleHard
Fri, Oct 23Valid price treeMedium
Thu, Oct 22Longest route between two teamsMedium
Wed, Oct 21Groups of anagram product codesMedium
Tue, Oct 20Merge two sorted listsEasy
Mon, Oct 19Zeros to the backEasy
Sun, Oct 18Maximum of every stretchHard
Sat, Oct 17Fewest swaps to sortHard
Fri, Oct 16Sort the three levelsMedium
Thu, Oct 15Middle of a chainMedium
Wed, Oct 14Stretches with an exact totalMedium
Tue, Oct 13Postorder listingEasy
Mon, Oct 12Count the departmentsEasy
Sun, Oct 11Four lists that sum to zeroHard
Sat, Oct 10Growing tableHard

See the whole Python DSA 150 sheet