* The source information is from Udacity Nanodegree Program- Become an Android Developer *
Screen Density- Responsive UI
Android Design Principles
* The source information is from Udacity Nanodegree Program- Become an Android Developer *
- Material Design for Android : Material Design is a design language incorporated in the Android Lollipop release.
- The Material Design specifications is a great place to start.
Sunshine app: highlight Today’s forecast
github: S11.01- NewListItemLayout , S11.02-TodayListItem , S11.03- DataBinding
* The source information is from Udacity Nanodegree Program- Become an Android Developer *
S11.01- Sunshine’s New Layout:
Count and Say
https://leetcode.com/problems/count-and-say/description/
My solution: Count And Say
- The nth level result is from counting each digit of the result of (n-1) th level.
String to Integer (atoi)
https://leetcode.com/problems/string-to-integer-atoi/description/
github: String to Integer(atoi)
Checking point:
- null or empty string
- white spaces
- +/- sign
- calculate real value
- handle min & max
Using StringBuffer solve Reverse Integer problem
LeetCode: https://leetcode.com/problems/reverse-integer/description/
The below Solution 1 is the most popular solution we can find online.
But here is another way (Solution 2) to solve the problem with StringBuffer.
The Solution 2 is easier to understand and the code is cleaner.
Localization
* The article source is from Udacity Nanodegree Program- Become an Android Developer *
Localization
Localization (also known as Internationalization) is the adaptation of a product or service to meet the needs of a particular language, culture or desired population’s “look-and-feel”.
Making Apps More Accessible
* The article source is from Udacity Nanodegree Program- Become an Android Developer *
Accessibility refers to the design of products, devices, services, or environments for people who experience disabilities. Android provides accessibility features like
- TalkBack: It uses spoken feedback to describe the results of actions such as launching an app, and events such as notifications.
- Explore by Touch which is a system feature that works with TalkBack, allowing you to touch your device’s screen and hear what’s under your finger via spoken feedback. This feature is helpful to users with low vision.
- Accessibility settings that let you modify your device’s display and sound options, such as increasing the text size, changing the speed at which text is spoken, and more. and more.
leetcode- Rotate Image
Leetcode: https://leetcode.com/problems/rotate-image/description/
Given input matrix = [1,2,3], [4,5,6], [7,8,9] rotate the input matrix in-place such that it becomes: [7,4,1], [8,5,2], [9,6,3]
- (x, y), the affected point is
(y, n – x – 1), (n – x – 1, n – y – 1), (n – y – 1, x), “n” is the size of the matrix.
The rotate function=
(x, y) -> (y, n – x – 1) -> (n – x – 1, n – y – 1) -> (n – y – 1, x) -> (x, y). - For the i th line, we start from (i, i) ( !! in for loop j = i ) , and ends at (i, n – 2 – i).
- We only need process half of them. n/2
