https://leetcode.com/problems/valid-sudoku/description/
In a 9 * 9 matrix, check if each numbers (0-9) doesn’t repeat in each row, col and 3 * 3 matrix.
Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any leading zero, except the number 0 itself. The digits are stored such that the most significant digit is at the head of the list.
For example:
Q1.
int[] nums = {1,2,3,4};
int[] result = plusOne(nums);
the digits are in the result array are {1,2,3,5};
Original artile : https://developer.android.com/reference/android/os/AsyncTask.html
The three types used by an asynchronous task are the following:
Params, the type of the parameters sent to the task upon execution.
Progress, the type of the progress units published during the background computation.
Result, the type of the result of the background computation.
GitHub:
Synchronizing The Weather: S10.01-SynchronizingTheWeather
SmarterSyncing: S10.02- SmarterSyncing
Sunshine FirebaseJobDispatcher: S10.03-FirebaseJobDispatcher
Sunshine Notifications: S10.04-Notifications
* Reference: Udacity Nanodegree Program- Become an Android Developer *
Given nums = [2, 7, 11, 15], target = 9, Because nums[0] + nums[1] = 2 + 7 = 9, return [0, 1].
Use a loop instead of two loops.
GitHub: solution 1.1
There are many different solutions, I practiced with a HashSet. Time complexity: O (n).
github: S0905-MoreDetails
* Reference: Udacity Nanodegree Program- Become an Android Developer *
To set up the Details Activity to use CursorLoaders to display more weather information in the Detail Layout.
* Reference: Udacity Nanodegree Program- Become an Android Developer *
A CursorLoader is a subclass of AsyncTaskLoader that queries a ContentProvider, via a ContentResolver and specific URI, and returns a Cursor of desired data. This loader runs its query on a background thread so that it doesn’t block the UI.
github: S0901- ContentProviderFoundation
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