Practice Problems

Problem of the Day: Integer Square Root — keep your streak alive!

Practice Problems — digit-dp

#ProblemTopicsDifficulty
721 Repdigits in Range math digit-dp 1200
656 No Zero Digit digit-dp 1300
700 No Repeated Neighbour Digit digit-dp 1300
724 Divisible by Digit Count math digit-dp 1300
751 All Digits at Most Five digit-dp 1400
781 All Digits Even digit-dp 1400
855 All Digits at Most Three digit-dp 1400
888 All Digits at Least Five digit-dp 1400
657 Strictly Climbing Digits digit-dp 1500
553 Numbers That Only Climb digit-dp 1700
696 Digits That Only Fall digit-dp 1700
550 Digit Sums Divisible by K digit-dp 1900
551 The Cursed Substring digit-dp 1900
658 Digits Alternate Parity digit-dp 1900
697 Even Number of Digits digit-dp 1900
698 Digit Sum at Most 9 digit-dp 1900
699 Contains a Seven digit-dp 1900
722 Digit Sum Equals 10 digit-dp 1900
723 More Even Digits than Odd digit-dp 1900
750 Digit Sum Divisible by Three digit-dp 1900
752 First Digit Equals Last math digit-dp 1900
779 Digit Sum Divisible by 11 digit-dp 1900
780 Adjacent Digits Differ by 2+ digit-dp 1900
782 No Digit Appears Twice in a Row digit-dp 1900
783 Odd Digit Sum digit-dp 1900
812 Digit Sum Divisible by 9 digit-dp 1900
813 Adjacent Digits Differ by One digit-dp 1900
814 Even Digit Product digit-dp 1900
815 Digit Sum Mod 3 Equals 1 digit-dp 1900
854 Digit Sum Divisible by 7 digit-dp 1900
856 Contains a Zero digit-dp 1900
859 Numbers with K Set Bits combinatorics digit-dp 1900
887 Digit Sum Divisible by 5 digit-dp 1900
552 Total Digit Sum in a Range digit-dp 2100
860 Bounded XOR Count bitwise digit-dp 2200