Practice Problems

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

Practice Problems — 1200-1600

ProblemTopics Solvers Acceptance Difficulty
Rotated but Sorted implementation 0 — 1300
Counting the Carries math implementation 0 — 1300
All the Squares math 0 — 1300
Beautiful Permutation math implementation 0 — 1300
Emptying Two Piles math 0 — 1300
Canonical Palindrome strings 0 — 1300
Tower of Hanoi: The Moves implementation 0 — 1300
Order of Elimination implementation 0 — 1300
Trade Every Rise greedy 0 — 1300
Zigzag Diagonals implementation 0 — 1300
Local or Global math implementation 0 — 1300
No Zero Digit digit-dp 0 — 1300
Count Positives in Range prefix-sums 0 — 1300
Count Multiples of 3 in Range prefix-sums 0 — 1300
Count Primes in Range prefix-sums 0 — 1300
Joining the Ropes greedy heap 0 — 1300
No Repeated Neighbour Digit digit-dp 0 — 1300
Count Small-Magnitude in Range prefix-sums 0 — 1300
Count Even-Digit-Sum in Range prefix-sums 0 — 1300
Divisible by Digit Count math digit-dp 0 — 1300
Count Multiples of 7 prefix-sums 0 — 1300
Count Perfect Cubes prefix-sums 0 — 1300
Count Single-Digit Values prefix-sums 0 — 1300
Count Squarefree in Range prefix-sums 0 — 1300
Count Multiples of 6 prefix-sums 0 — 1300
Count Three-Digit Values prefix-sums 0 — 1300
Count Palindromic Values prefix-sums 0 — 1300
Range Prime Count prefix-sum 0 — 1300
Range Perfect-Square Count prefix-sum 0 — 1300
Range Power-of-Two Count prefix-sum 0 — 1300
Range Multiple-of-Three Count prefix-sum 0 — 1300
Range Even-Digit-Sum Count prefix-sum 0 — 1300
Row Coloring, 3 Colors combinatorics 0 — 1300
Row Coloring, 4 Colors combinatorics 0 — 1300
Row Coloring, 5 Colors combinatorics 0 — 1300
The Josephus Survivor math implementation 0 — 1400
Lexicographically Smallest Rotation strings 0 — 1400
Longest Substring Without Repeats strings two-pointers 0 — 1400
Zero-Sum Subarrays prefix-sums 0 — 1400
Most Distinct Window sliding-window 0 — 1400
Longest Affordable Streak sliding-window two-pointers 0 — 1400
At Most K Odd Numbers two-pointers 0 — 1400
Longest Distinct Stretch two-pointers 1
100%
1400
Boats for Two greedy two-pointers 0 — 1400
K-th of Two Sorted Arrays two-pointers 0 — 1400
Best Product of Three math sorting 0 — 1400
Reverse One Segment implementation sorting 0 — 1400
Spiral Order implementation 0 — 1400
Merged Interval Count intervals sorting 0 — 1400
Total Covered Length intervals sorting 0 — 1400