Practice Problems

Daily Challenge: Paths Around the Walls (1500) Solve it to start a streak

Practice Problems — 1200-1600

ProblemTopics Solvers Acceptance Difficulty
Make Everyone Equal math sorting 0 — 1200
Repdigits in Range math digit-dp 0 — 1200
Points Within Reach geometry 0 — 1200
Angle Between Clock Hands math 0
0%
1300
Collapse Adjacent Pairs strings stack 0 — 1300
Count Pattern Occurrences strings 0 — 1300
Windows Reaching the Target sliding-window 0 — 1300
Pairs With a Given Sum implementation 0 — 1300
Pairs With a Given Difference implementation 0 — 1300
Rank Transform sorting 0 — 1300
Leaders of the Array implementation 0 — 1300
One Swap Away implementation sorting 0 — 1300
Maximum Subarray Sum dp 0 — 1300
Minimum Subarray Sum dp 0 — 1300
Saddle Points implementation 0 — 1300
Is It Prime math number-theory 0 — 1300
Count the Primes math number-theory 0 — 1300
Largest Prime Factor math number-theory 0 — 1300
Prime Factorization math number-theory 0 — 1300
Count the Divisors math number-theory 0 — 1300
Modular Power math 0 — 1300
Kaprekar's Routine math implementation 0 — 1300
Zeros at the End of N! math 0 — 1300
XOR of 1..N math bitwise 0 — 1300
Exact Change greedy 0 — 1300
First Value At Least X binary-search sorting 0 — 1300
Non-Adjacent Loot dp 0
0%
1300
Swap Neighbouring Bits bitwise 25
44%
1300
N-th Gray Code math bitwise 1
100%
1300
Wires to Add graphs 0 — 1300
Fewest Hops bfs graphs 0 — 1300
Tree or Not graphs trees 0 — 1300
Total Depth trees 0 — 1300
K Most Frequent heap sorting 0 — 1300
Range XOR Queries bitwise prefix-sums 0 — 1300
Cover the Demands greedy sorting 0 — 1300
Grid Points on a Segment math geometry 0 — 1300
Take-Away Game math games 0 — 1300
What Day Was It math implementation 0 — 1300
Palindromic Prime math 0 — 1300
Emirp math 0 — 1300
Wave Arrangement sorting 0 — 1300
Two Circles math geometry 0 — 1300
A Row of Pascal's Triangle math combinatorics 0 — 1300
Two Kinds of Stamps math 0 — 1300
Tic-Tac-Toe Referee implementation 0 — 1300
Count Pentagonals in a Range math 0 — 1300
Count Hexagonals in a Range math 0 — 1300
Zero Then One math strings 0 — 1300
Geometric or Not math 0 — 1300