Gopythor

What are in-place array operations? Given an Array of integers, return an Array where every element at an even-indexed position is squared. Input: array = [9, -2, -9, 11, 56, -12, -3] Output: [81, -2, 81, 11, 3136, -12, 9] Explanation: The numbers at even indexes (0, 2, 4, 6) have been squared, whereas the numbers at odd indexes (1, 3, 5) have been left the same. Not in-place Code Java public in..

Go/Leet Code 2022. 3. 5. 18:52

Given an array of integers arr, return true if and only if it is a valid mountain array. Recall that arr is a mountain array if and only if: arr.length >= 3 There exists some i with 0 arr[i + 1] > ... > arr[arr.length - 1] Constraints: 1 arr[i] { goingUp = false down++ } else { up++ } } else { if arr[i-1] < arr[..

Go/Leet Code 2022. 3. 4. 02:03

Given an array arr of integers, check if there exists two integers N and M such that N is the double of M ( i.e. N = 2 * M). More formally check if there exists two indices i and j such that : i != j 0

Go/Leet Code 2022. 3. 2. 23:25

Search in an Array Linear Search The time complexity for a linear search is O(N)O(N) Edge case refers to a problem that occurs when the value of data processed by the algorithm exceeds a certain range according to the characteristics of the algorithm. For example, a problem may occur when the value of the variable called fixnum exceeds the range of -128 to 127. https://kathak33.tistory.com/19 Le..

Go/Leet Code 2022. 3. 2. 19:19

Given an integer array nums sorted in non-decreasing order, remove the duplicates in-place such that each unique element appears only once. The relative order of the elements should be kept the same. Since it is impossible to change the length of the array in some languages, you must instead have the result be placed in the first part of the array nums. More formally, if there are k elements aft..

Go/Leet Code 2022. 3. 1. 18:03

Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The relative order of the elements may be changed. Since it is impossible to change the length of the array in some languages, you must instead have the result be placed in the first part of the array nums. More formally, if there are k elements after removing the duplicates, then the first k elements..

Go/Leet Code 2022. 2. 27. 01:40

Array Deletions Deleting From the End of an Array Code(Creates an Array with room for 10 elements, and then adds elements into the first 6 indexes of it.) Java // Declare an integer array of 10 elements. int[] intArray = new int[10]; // The array currently contains 0 elements int length = 0; // Add elements at the first 6 indexes of the Array. for(int i = 0; i < 6; i++) { intArray[length] = i; l..

Go/Leet Code 2022. 2. 26. 23:27

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 lengt..

Go/Leet Code 2022. 2. 25. 03:48