| 0001 |
Two sum |
Algorithm |
Easy |
Java |
Test |
| 0002 |
Add Two Numbers |
Algorithm |
Medium |
Java |
Test |
| 0003 |
Longest Substring without Repeating Characters |
Algorithm |
Medium |
Java |
Test |
| 0006 |
ZigZag Conversion |
Algorithm |
Medium |
Java |
Test |
| 0007 |
Reverse Integer |
Algorithm |
Easy |
Java |
Test |
| 0011 |
Container With Most Water |
Algorithm |
Medium |
Java |
Test |
| 0015 |
3Sum |
Algorithm |
Medium |
Java |
Test |
| 0016 |
3Sum Closest |
Algorithm |
Medium |
Java |
Test |
| 0018 |
4Sum |
Algorithm |
Medium |
Java |
Test |
| 0019 |
Remove Nth Node From End of List |
Algorithm |
Medium |
Java |
Test |
| 0020 |
Valid Parentheses |
Algorithm |
Easy |
Java |
Test |
| 0021 |
Merge Two Sorted Lists |
Algorithm |
Easy |
Java |
Test |
| 0024 |
Swap Nodes in Pairs |
Algorithm |
|
Java |
Test |
| 0026 |
Remove Duplicates from Sorted Array |
Algorithm |
Easy |
Java |
Test |
| 0027 |
Remove Element |
Algorithm |
Easy |
Java |
Test |
| 0031 |
Next Permutation |
Algorithm |
Medium |
Java |
Test |
| 0046 |
Permutations |
Algorithm |
Medium |
Java |
Test |
| 0047 |
Permutations II |
Algorithm |
Medium |
Java |
Test |
| 0049 |
Group Anagrams |
Algorithm |
Medium |
Java |
Test |
| 0075 |
Sort Colors |
Algorithm |
Medium |
Java |
Test |
| 0076 |
Minimum Window Substring |
Algorithm |
Hard |
Java |
Test |
| 0080 |
Remove Duplicates from Sorted Array II |
Algorithm |
Medium |
Java |
Test |
| 0082 |
Remove Duplicates from Sorted List II |
Algorithm |
Medium |
Java |
Test |
| 0083 |
Remove Duplicates from Sorted List |
Algorithm |
Easy |
Java |
Test |
| 0086 |
Partition List |
Algorithm |
Medium |
Java |
Test |
| 0088 |
Merge Sorted Array |
Algorithm |
Easy |
Java |
Test |
| 0092 |
Reverse Linked List II |
Algorithm |
Medium |
Java |
Test |
| 0098 |
Validate Binary Search Tree |
Algorithm |
Medium |
Java |
Test |
| 0101 |
Symmetric Tree |
Algorithm |
Easy |
Java |
Test |
| 0108 |
Convert Sorted Array to Binary Search Tree |
Algorithm |
Easy |
Java |
Test |
| 0110 |
Balanced Binary tree |
Algorithm |
Easy |
Java |
Test |
| 0112 |
Path Sum |
Algorithm |
Easy |
Java |
Test |
| 0113 |
Path Sum II |
Algorithm |
Medium |
Java |
Test |
| 0120 |
Triangle |
Algorithm |
Medium |
Java |
Test |
| 0125 |
Valid Palindrome |
Algorithm |
Easy |
Java |
Test |
| 0129 |
Sum Root to Leaf Numbers |
Algorithm |
Medium |
Java |
Test |
| 0149 |
Max Points on a Line |
Algorithm |
Difficult |
Java |
Test |
| 0153 |
Find Minimum in Rotated Sorted Array |
Algorithm |
Medium |
Java |
Test |
| 0154 |
Find Minimum in Rotated Sorted Array |
Algorithm |
Difficult |
Java |
Test |
| 0167 |
Two sum II - Input array is sorted |
Algorithm |
Easy |
Java |
Test |
| 0202 |
Happy Number |
Algorithm |
Easy |
Java |
Test |
| 0203 |
Remove Linked List Elements |
Algorithm |
Easy |
Java |
Test |
| 0205 |
Isomorphic Strings |
Algorithm |
Easy |
Java |
Test |
| 0206 |
Reverse Linked List |
Algorithm |
Easy |
Java |
Test |
| 0209 |
Minimum Size Subarray Sum |
Algorithm |
Medium |
Java |
Test |
| 0215 |
Kth Largest Element in an Array |
Algorithm |
Medium |
Java |
Test |
| 0217 |
Contains Duplicate |
Algorithm |
Easy |
Java |
Test |
| 0219 |
Contains Duplicate II |
Algorithm |
Easy |
Java |
Test |
| 0220 |
Contains Duplicate III |
Algorithm |
Medium |
Java |
Test |
| 0222 |
Count Complete Tree Nodes |
Algorithm |
Medium |
Java |
Test |
| 0225 |
Implement Stack Using Queues |
Algorithm |
Easy |
Java |
Test |
| 0226 |
Invert Binary Tree |
Algorithm |
Easy |
Java |
Test |
| 0235 |
Lowest Common Ancestor of a Binary Search Tree |
Java |
Test |
|
|
| 0236 |
Lowest Common Ancestor of a Binary Tree |
Algorithm |
Medium |
java |
Test |
| 0242 |
Valid Anagram |
Algorithm |
Easy |
Java |
Test |
| 0257 |
Binary Tree Paths |
Algorithm |
Easy |
Java |
Test |
| 0283 |
Move Zeroes |
Algorithm |
Easy |
java |
Test |
| 0290 |
Word Pattern |
Algorithm |
Easy |
Java |
Test |
| 0328 |
Odd Even Linked List |
Algorithm |
Medium |
Java |
Test |
| 0344 |
Reverse String |
Algorithm |
Easy |
Java |
Test |
| 0345 |
Reverse Vowels of a String |
Algorithm |
Easy |
Java |
Test |
| 0349 |
Intersection of Two Arrays |
Algorithm |
Easy |
Java |
Test |
| 0350 |
Intersection of Two Arrays II |
Algorithm |
Easy |
Java |
Test |
| 0404 |
Sum of Left Leaves |
Algorithm |
Easy |
Java |
Test |
| 0437 |
Path sum III |
Algorithm |
Easy |
Java |
Test |
| 0438 |
Find All Anagrams in a String |
Algorithm |
Medium |
Java |
Test |
| 0442 |
Find All Duplicates in an Array |
Algorithm |
Medium |
Java |
Test |
| 0445 |
Add Two Numbers II |
Algorithm |
Medium |
Java |
Test |
| 0447 |
Number of Boomerangs |
Algorithm |
Easy |
Java |
Test |
| 0451 |
Sort Characters By Frequency |
Algorithm |
Medium |
Java |
Test |
| 0454 |
4Sum II |
Algorithm |
Medium |
Java |
Test |
| 0566 |
Reshape the Matrix |
Algorithm |
Easy |
Java |
Test |
| 0717 |
1-bit and 2-bit Characters |
Algorithm |
Easy |
Java |
Test |
| 0962 |
Maximum Width Ramp |
Algorithm |
Medium |
Java |
Test |
| 0978 |
Longest Turbulent Subarray |
Algorithm |
Medium |
Java |
Test |
| 1053 |
Previous permutation With One Swap |
Algorithm |
Medium |
java |
Test |