402. Remove K Digits LeetCode Solution 401. Binary Watch LeetCode Solution 400. Nth Digit LeetCode Solution 399. Evaluate Division LeetCode Solution 398. Random Pick Index LeetCode Solution 397. Integer Replacement LeetCode Solution 396. Rotate Function LeetCode Solution 395. Longest Substring with At Least K Repeating Characters LeetCode Solution 394. Decode String LeetCode Solution 393. UTF-8 Validation LeetCode Solution 392. Is Subsequence LeetCode Solution 391. Perfect Rectangle LeetCode Solution 390. Elimination Game LeetCode Solution 389. Find the Difference LeetCode Solution 388. Longest Absolute File Path LeetCode Solution 387. First Unique Character in a String LeetCode Solution 386. Lexicographical Numbers LeetCode Solution 385. Mini Parser LeetCode Solution 384. Shuffle an Array LeetCode Solution 383. Ransom Note LeetCode Solution 382. Linked List Random Node LeetCode Solution 381. Insert Delete GetRandom O(1) – Duplicates allowed LeetCode Solution 380. Insert Delete GetRandom O(1) LeetCode Solution 378. Kth Smallest Element in a Sorted Matrix LeetCode Solution 377. Combination Sum IV LeetCode Solution 376. Wiggle Subsequence LeetCode Solution 375. Guess Number Higher or Lower II LeetCode Solution 374. Guess Number Higher or Lower LeetCode Solution 373. Find K Pairs with Smallest Sums LeetCode Solution 372. Super Pow LeetCode Solution