dci_js_exercise_solutions

the contents of this repository

1. solutions to exercises from our course

• they start wit 03_pb_

• pb_assessment_16_11_21:

  Assessment Test of 16.11.2021 --> my solutions with explanations for the tougher tasks

• pb_assessment_17_12_21 Assessment Test* of 17.12.21 --> my revised solutions (they passed all tests)

1.2. official solutions by Sebastian

• seb_sol_objects-practice-4
• seb_sol_callbacks-practice

2. "my" class/tutorium code, exercises and solutions (sometimes with explanations)

in alphabetical order

1. Bubble Sort

   • algorithm with:
   • do...while
   • sort() array method

2. Check for character in string functions

   • 5 different ways
   • arrow-functions
   • just true/false or
   • print sentence
   • for-loop, if-condition
   • includes()

3. calculator

   • with object constructor function

4. check function for word , number

   • logical & comparison operators (including !)
   • isNaN functions

5. check even or odd

   • one number
   • numbers 0 to n
   • ternary ? :
   • mod

6. Dice function

   • adjustible dice roll, for dice with variable number of sides
   • closure

7. endsWith

   • another answer for afternoon exercise 1 01.12.2021

8. fibonacci sequence function

   • for-loop
   • array.push()
   • recursion new

9. filter

   • includes exercise 1 afternoon 01.12.2021
   • filter array of strings by first char of string

10. first letter uppercase function (each word in string)

    • toUpperCase ()
    • split(), charAt(), push(), slice(), join()
    • with for...of
    • with forEach

11. Fisher Yates Algorithm

    • random shuffle elements in array

12. fizzbuzz - function

    • for-loop, else-if
    • logical and comparison operators

13. forEach

    • vowel counter in string with fallback assignment

14. geometric sequence function

    • for-loop
    • Math.pow()

15. get_num_array_objects_property_value

    • count instances of property value from objects in array
    • reduce()
    • ternary

16. ladder -object with method-chaining

17. largest number in array and largest sub-array functions

    • for-loop
    • if-statement
    • Math.max()
    • spread operator ...

18. map

    • show first and last character in array of strings

19. multi-dimensional array multiplication function

    • nested for loop (2 loops)
    • multiplication assignment operator

20. Palindrome 1.

    • for-loop
    • if-statement

21. Random number

    • between min & max
    • get a random number (e.g. useful for games)

22. reduce

    • examples from 01.12.2021

23. reverse number function

    • string methods split(), reverse(), join()
    • number constructor Number()

24. sort stuff

    • alphabetically, digits 0-9
    • nested loop
    • split(),join()
    • sort()

25. scramble words

    • from Mock exam advanced PB by James
    • Fisher Yates Algorithm
    • array methods
    • includes()

26. sum of multiples functions

    • with one and three arguments
    • modulo, logical + comparison operators
    • for-loop, if-condition