qifeng sun

qifeng sun

Member Since May 16, 2017
Open to Work

6,274

Total Points

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Skills & Experience

  • Spoken Languages

    • English, Chinese

66 Achievements

  • Achievement

    Daily Exercise Program

    PHP Basics

    Achieved

    Sep 13, 2017

    Daily Exercise Program
  • Achievement

    Unit Converter

    PHP Basics

    Achieved

    Sep 8, 2017

    Unit Converter
  • Achievement

    Getting to Know PHP

    PHP Basics

    Achieved

    Sep 8, 2017

    Getting to Know PHP
  • Achievement

    Adding a New Web Page

    Introduction to HTML and CSS (2016)

    Achieved

    Sep 8, 2017

    Adding a New Web Page
  • Achievement

    Make It Beautiful with CSS

    Introduction to HTML and CSS (2016)

    Achieved

    Sep 8, 2017

    Make It Beautiful with CSS
  • Achievement

    HTML: The Structural Foundation of Web Pages and Applications

    Introduction to HTML and CSS (2016)

    Achieved

    Sep 8, 2017

    HTML: The Structural Foundation of Web Pages and Applications
  • Achievement

    Getting Familiar with HTML and CSS

    Introduction to HTML and CSS (2016)

    Achieved

    Sep 7, 2017

    Getting Familiar with HTML and CSS
  • Achievement

    Ruby Iteration

    Ruby Loops

    Achieved

    Aug 24, 2017

    Ruby Iteration
  • Achievement

    Ruby Arrays

    Ruby Collections

    Achieved

    Aug 21, 2017

    Ruby Arrays
  • Achievement

    Ruby Logical Operators

    Ruby Operators and Control Structures

    Achieved

    Aug 21, 2017

    Ruby Logical Operators
  • Achievement

    Ruby Control Structures

    Ruby Operators and Control Structures

    Achieved

    Aug 20, 2017

    Ruby Control Structures
  • Achievement

    Ruby Operators

    Ruby Operators and Control Structures

    Achieved

    Aug 19, 2017

    Ruby Operators
  • Achievement

    Ruby Methods

    Ruby Basics (Retired)

    Achieved

    Aug 19, 2017

    Ruby Methods
  • Achievement

    Ruby Numbers (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Aug 18, 2017

    Ruby Numbers (Ruby Basics)
  • Achievement

    Ruby Strings (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Aug 18, 2017

    Ruby Strings (Ruby Basics)
  • Achievement

    How Ruby Works

    Ruby Basics (Retired)

    Achieved

    Aug 15, 2017

    How Ruby Works
  • Achievement

    Methods

    C# Objects

    Achieved

    Jul 24, 2017

    Methods
  • Achievement

    Object-Oriented Programming

    C# Objects

    Achieved

    Jul 24, 2017

    Object-Oriented Programming
  • Achievement

    Prepare and Plan

    C# Basics (Retired)

    Achieved

    Jul 20, 2017

    Prepare and Plan
  • Achievement

    Python Sets

    Python Collections (2016, retired 2019)

    Achieved

    Jul 20, 2017

    Python Sets
  • Achievement

    Python Tuples

    Python Collections (2016, retired 2019)

    Achieved

    Jul 20, 2017

    Python Tuples
  • Achievement

    Python Lists

    Python Collections (2016, retired 2019)

    Achieved

    Jul 16, 2017

    Python Lists
  • Achievement

    Shopping List App

    Python Basics (2015)

    Achieved

    Jul 12, 2017

    Shopping List App
  • Achievement

    Letter Game App

    Python Basics (2015)

    Achieved

    Jul 12, 2017

    Letter Game App
  • Achievement

    Number Game App

    Python Basics (2015)

    Achieved

    Jul 9, 2017

    Number Game App
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Jul 8, 2017

    Logic in Python
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    Jul 8, 2017

    Python Data Types
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Jul 7, 2017

    Python For Beginners
  • Achievement

    Joining Table Data with SQL

    Querying Relational Databases

    Achieved

    Jul 1, 2017

    Joining Table Data with SQL
  • Achievement

    Table Relationships

    Querying Relational Databases

    Achieved

    Jun 29, 2017

    Table Relationships
  • Achievement

    Date and Time Functions

    Reporting with SQL

    Achieved

    Jun 29, 2017

    Date and Time Functions
  • Achievement

    Database Keys

    Querying Relational Databases

    Achieved

    Jun 28, 2017

    Database Keys
  • Achievement

    Database Normalization

    Querying Relational Databases

    Achieved

    Jun 28, 2017

    Database Normalization
  • Achievement

    Exploring the Java Collections Framework

    Java Data Structures

    Achieved

    Jun 24, 2017

    Exploring the Java Collections Framework
  • Achievement

    Delivering the MVP

    Java Objects

    Achieved

    Jun 18, 2017

    Delivering the MVP
  • Achievement

    Creating the MVP

    Java Objects

    Achieved

    Jun 17, 2017

    Creating the MVP
  • Achievement

    Harnessing the Power of Objects

    Java Objects

    Achieved

    Jun 15, 2017

    Harnessing the Power of Objects
  • Achievement

    Meet Objects

    Java Objects

    Achieved

    Jun 12, 2017

    Meet Objects
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    Jun 10, 2017

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Jun 10, 2017

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Jun 10, 2017

    Getting Started with Java
  • Achievement

    Aggregate and Numeric Functions

    Reporting with SQL

    Achieved

    Jun 8, 2017

    Aggregate and Numeric Functions
  • Achievement

    Working with Text

    Reporting with SQL

    Achieved

    Jun 8, 2017

    Working with Text
  • Achievement

    Ordering, Limiting and Paging Results

    Reporting with SQL

    Achieved

    Jun 7, 2017

    Ordering, Limiting and Paging Results
  • Achievement

    Handling Errors When Manipulating Data

    Modifying Data with SQL

    Achieved

    May 30, 2017

    Handling Errors When Manipulating Data
  • Achievement

    Deleting Data from a Database

    Modifying Data with SQL

    Achieved

    May 30, 2017

    Deleting Data from a Database
  • Achievement

    Updating Data in a Database

    Modifying Data with SQL

    Achieved

    May 28, 2017

    Updating Data in a Database
  • Achievement

    Adding Data to a Database

    Modifying Data with SQL

    Achieved

    May 28, 2017

    Adding Data to a Database
  • Achievement

    Finding the Data You Want

    SQL Basics

    Achieved

    May 27, 2017

    Finding the Data You Want
  • Achievement

    Getting Data from a Database

    SQL Basics

    Achieved

    May 26, 2017

    Getting Data from a Database
  • Achievement

    Data, Databases and SQL

    SQL Basics

    Achieved

    May 26, 2017

    Data, Databases and SQL
  • Achievement

    Getting Started with iOS Development

    Build a Simple iPhone App with Swift

    Achieved

    May 26, 2017

    Getting Started with iOS Development
  • Achievement

    Differentiating Between Objects

    Object-Oriented Swift

    Achieved

    May 25, 2017

    Differentiating Between Objects
  • Achievement

    Class Inheritance

    Object-Oriented Swift

    Achieved

    May 25, 2017

    Class Inheritance
  • Achievement

    Classes in Swift

    Object-Oriented Swift

    Achieved

    May 24, 2017

    Classes in Swift
  • Achievement

    Complex Data Structures

    Object-Oriented Swift

    Achieved

    May 23, 2017

    Complex Data Structures
  • Achievement

    Adding Power to Functions

    Functions in Swift

    Achieved

    May 22, 2017

    Adding Power to Functions
  • Achievement

    Functions in Swift

    Functions in Swift

    Achieved

    May 21, 2017

    Functions in Swift
  • Achievement

    Control Flow With Conditional Statements

    Swift Collections and Control Flow

    Achieved

    May 21, 2017

    Control Flow With Conditional Statements
  • Achievement

    Control Flow With Loops

    Swift Collections and Control Flow

    Achieved

    May 21, 2017

    Control Flow With Loops
  • Achievement

    Dictionaries in Swift

    Swift Collections and Control Flow

    Achieved

    May 20, 2017

    Dictionaries in Swift
  • Achievement

    Introduction to Collections

    Swift Collections and Control Flow

    Achieved

    May 20, 2017

    Introduction to Collections
  • Achievement

    Swift Operators

    Swift Basics

    Achieved

    May 20, 2017

    Swift Operators
  • Achievement

    Swift Types

    Swift Basics

    Achieved

    May 20, 2017

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift Basics

    Achieved

    May 20, 2017

    An Introduction to Swift Programming
  • Achievement

    Newbie

    Achieved

    May 16, 2017

    Newbie