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Problem Statement You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in nums1 and nums2 respectively. Merge nums1 and nums2 into a single array sorted in non-decreasing order. The final sorted array should not be returned by the function, but instead be stored inside the array nums1. To accommodate this, nums1 has a length of m + n, where the first m elements […]
What is Queue? Queue is a fundamental data structure and it plays an important role in software development. Queue is useful in many real-world scenarios such as Printer Job Queues, Task Scheduling and Traffic Management. Queue is a linear data structure that follows the FIFO (First-In-First-Out).In queues, insert operations to be performed at one end […]
Given an array nums of integers, return how many of them contain an even number of digits. Constraints Example Input: nums = [12,345,2,6,7896]Output: 2Explanation: 12 contains 2 digits (even number of digits). 345 contains 3 digits (odd number of digits). 2 contains 1 digit (odd number of digits). 6 contains 1 digit (odd number of digits). 7896 contains 4 digits (even number of […]
Given a 0-indexed string word and a character ch, reverse the segment of word that starts at index 0 and ends at the index of the first occurrence of ch (inclusive). If the character ch does not exist in word, do nothing. Return the resulting string. Constraints Example Input: word = “abcdefd”, ch = “d”Output: “dcbaefd”Explanation: The first occurrence of “d” is at index 3. Reverse the part of word from 0 to 3 (inclusive), […]
The Tribonacci sequence Tn is defined as follows: T0 = 0, T1 = 1, T2 = 1, and Tn+3 = Tn + Tn+1 + Tn+2 for n >= 0. Given n, return the value of Tn. Constraints Example Input: n = 4 Output: 4 Explanation: T_3 = 0 + 1 + 1 = 2 T_4 = 1 + 1 + 2 = 4 Solution […]
You are given a string s and an integer array indices of the same length. The string s will be shuffled such that the character at the ith position moves to indices[i] in the shuffled string. Return the shuffled string. Constraints Example Input: s = “codeleet”, indices = [4,5,6,7,0,2,1,3]Output: “leetcode”Explanation: As shown, “codeleet” becomes “leetcode” after shuffling. Solution We can easily solve “Shuffle String” coding problem using […]