Practice Problems

Daily Challenge: Down the Triangle (1400) Solve it to start a streak

two-pointers Problems

24 practice problems tagged two-pointers , from difficulty 900 to 1900 — solve them in our in-browser judge with instant verdicts. Browse all problems.

Related: sorting sliding-window strings greedy

ProblemTopics Solvers Acceptance Difficulty
Compact a Sorted Array two-pointers 0 — 900
Sort the Flag sorting two-pointers 0 — 1000
Is It a Subsequence strings two-pointers 0 — 1100
Longest Substring Without Repeats strings two-pointers 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
Closest Pair Sum to Zero sorting two-pointers 0 — 1400
K Nearest Values sorting two-pointers 0 — 1400
Shortest Sufficient Stretch sliding-window two-pointers 19
66%
1500
Closest Pair Sum sorting two-pointers 1
100%
1500
Three That Sum to T sorting two-pointers 0 — 1500
Ones with K Flips sliding-window two-pointers 0 — 1500
The Widest Container two-pointers 0 — 1500
Longest Mountain two-pointers 0 — 1500
Zero Triplets sorting two-pointers 0 — 1600
Exactly K Odd Numbers two-pointers 0 — 1600
Rainwater in the Ruins two-pointers 0 — 1700
Subarrays with Small Product two-pointers 0 — 1700
Subarrays with Bounded Maximum two-pointers 0 — 1700
Subarrays with Sum in a Band two-pointers 0 — 1700
Exactly K Distinct two-pointers 0 — 1900