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CodeTutor - Coding Interview Preparation

CodeTutor - Coding Interview Preparation

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Showing 20 of 401 questions

Check if an Original String Exists Given Two Encoded Strings

StringsDynamic Programming

Dynamic Programming★LeetCode #2060

Check if Array Is Sorted and Rotated

Two Pointers★LeetCode #1752

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Check If Array Pairs Are Divisible by k

Medium

MathArraysHash Tables

Prefix Sum★LeetCode #1497

Check if Binary String Has at Most One Segment of Ones

Two Pointers★LeetCode #1784

Check if Every Row and Column Contains All Numbers

ArraysHash Tables

Matrix Traversal★LeetCode #2133

Check If It Is a Good Array

Greedy★LeetCode #1250

Check If It Is a Straight Line

Two Pointers★LeetCode #1232

Check if Matrix Is X-Matrix

Matrix Traversal★LeetCode #2319

Check if Move is Legal

Matrix Traversal★LeetCode #1958

Check If N and Its Double Exist

ArraysHash Tables

Two Pointers★LeetCode #1346

Check if Number Has Equal Digit Count and Digit Value

StringsHash Tables

Prefix Sum★LeetCode #2283

Check if Number is a Sum of Powers of Three

Greedy★LeetCode #1780

Check if Numbers Are Ascending in a Sentence

Two Pointers★LeetCode #2042

Check if Object Instance of Class

DFS (Depth-First Search)★LeetCode #2618

Check if One String Swap Can Make Strings Equal

StringsHash Tables

Two Pointers★LeetCode #1790

Coin Change II

ArraysDynamic Programming

Dynamic Programming★LeetCode #518

Check if Point Is Reachable

Greedy★LeetCode #2543

Check If String Is a Prefix of Array

Two Pointers★LeetCode #1961

Check If String Is Transformable With Substring Sort Operations

Greedy★LeetCode #1585

01 Matrix

BFS (Breadth-First Search)★Matrix TraversalDynamic ProgrammingLeetCode #542