style: fix code inspection findings (#508)

docs: update kata progress

kata/4-kyu/connect-four-1/README.md

@@ -8,8 +8,6 @@ The grid is 6 row by 7 columns, those being named from A to G.
 
 You will receive a list of strings showing the order of the pieces which dropped in columns:
 
-![alt text](http://crowd-multilogue.com/Images/Codewars/KataConnectFourWinner.jpg)
-
 ```
   piecesPositionList = ["A_Red",
                         "B_Yellow",

kata/4-kyu/snail/README.md

@@ -20,7 +20,13 @@ snail(array) #=> [1,2,3,4,5,6,7,8,9]
 
 This image will illustrate things more clearly:
 
-![](http://www.haan.lu/files/2513/8347/2456/snail.png)
+<svg xmlns="https://www.w3.org/2000/svg" width="715" height="354" viewBox="0 0 715.000000 354.000000" preserveAspectRatio="xMidYMid meet" style="background-color:lightgray">
+ <g transform="translate(0.000000,354.000000) scale(0.100000,-0.100000)" fill="#000000" stroke="none">
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+ </g>
+</svg>
 
 NOTE: The idea is not sort the elements from the lowest value to the highest; the idea is to traverse the 2-d array in a clockwise snailshell pattern.
 

kata/5-kyu/a-man-and-his-umbrellas/main/Weather.java

@@ -1,3 +1,3 @@
 enum Weather {
-  CLEAR, SUNNY, CLOUDY, RAINY, OVERCAST, WINDY, THUNDERSTORMS;
+  CLEAR, SUNNY, CLOUDY, RAINY, OVERCAST, WINDY, THUNDERSTORMS
 }

kata/5-kyu/airport-arrivals-slash-departures-number-1/README.md

@@ -2,7 +2,7 @@
 
 You are at the airport staring blankly at the arrivals/departures flap display...
 
-![](http://www.airport-arrivals-departures.com/img/meta/1200_630_arrivals-departures.png)
+![](https://www.airport-arrivals-departures.com/img/meta/1200_630_arrivals-departures.png)
 
 ## How it works
 

kata/5-kyu/gap-in-primes/README.md

@@ -6,7 +6,7 @@ Between 2 and 50 we have the following pairs of 2-gaps primes:
 `3-5, 5-7, 11-13, 17-19, 29-31, 41-43`
 
 A prime gap of length n is a run of n-1 consecutive composite numbers between two **successive** primes (
-see: http://mathworld.wolfram.com/PrimeGaps.html).
+see: https://mathworld.wolfram.com/PrimeGaps.html).
 
 We will write a function gap with parameters:
 

kata/5-kyu/josephus-permutation/README.md

@@ -35,5 +35,5 @@ So our final result is:
 [3,6,2,7,5,1,4]
 ```
 
-For more info, browse the <a href="http://en.wikipedia.org/wiki/Josephus_problem" target="_blank">Josephus
+For more info, browse the <a href="https://en.wikipedia.org/wiki/Josephus_problem" target="_blank">Josephus
 Permutation</a> page on wikipedia; Also, [live game demo](https://iguacel.github.io/josephus/)

kata/5-kyu/josephus-survivor/README.md

@@ -1,7 +1,7 @@
 # [Josephus Survivor](https://www.codewars.com/kata/josephus-survivor "https://www.codewars.com/kata/555624b601231dc7a400017a")
 
 In this kata you have to correctly return who is the "survivor", ie: the last element of
-a <a href="http://www.codewars.com/kata/josephus-permutation/" target="_blank" title="Josephus sequence">Josephus
+a <a href="https://www.codewars.com/kata/josephus-permutation" target="_blank" title="Josephus sequence">Josephus
 permutation</a>.
 
 Basically you have to assume that n people are put into a circle and that they are eliminated in steps of k elements,

kata/5-kyu/number-of-trailing-zeros-of-n/README.md

@@ -6,7 +6,7 @@ Write a program that will calculate the number of trailing zeros in a factorial
 
 Be careful `1000!` has 2568 digits...
 
-For more info, see: http://mathworld.wolfram.com/Factorial.html
+For more info, see: https://mathworld.wolfram.com/Factorial.html
 
 ## Examples
 

kata/5-kyu/perimeter-of-squares-in-a-rectangle/README.md

@@ -7,7 +7,7 @@ It's easy to see that the sum of the perimeters of these squares is :
 Could you give the sum of the perimeters of all the squares in a rectangle when there are n + 1
 squares disposed in the same manner as in the drawing:
 
-![alternative text](http://i.imgur.com/EYcuB1wm.jpg)
+![alternative text](https://i.imgur.com/EYcuB1wm.jpg)
 
 The function perimeter has for parameter n where n + 1 is the number of squares (they are numbered
 from 0 to n) and returns the total perimeter of all the squares.

kata/5-kyu/rot13/README.md

@@ -5,7 +5,7 @@ introvert at NSA? Va gur ryringbef,
 gur rkgebireg ybbxf ng gur BGURE thl'f fubrf.
 
 I found this joke on USENET, but the punchline is scrambled. Maybe you can decipher it?
-According to Wikipedia, ROT13 (http://en.wikipedia.org/wiki/ROT13) is frequently used to obfuscate
+According to Wikipedia, ROT13 (https://en.wikipedia.org/wiki/ROT13) is frequently used to obfuscate
 jokes on USENET.
 
 Hint: For this task you're only supposed to substitue characters. Not spaces, punctuation, numbers

kata/6-kyu/all-star-code-challenge-number-15/README.md

@@ -3,7 +3,7 @@
 **This Kata is intended as a small challenge for my students**
 
 Your family runs a shop and have just brought a Scrolling Text
-Machine (http://3.imimg.com/data3/RP/IP/MY-2369478/l-e-d-multicolour-text-board-250x250.jpg) to help get some more
+Machine (https://3.imimg.com/data3/RP/IP/MY-2369478/l-e-d-multicolour-text-board-250x250.jpg) to help get some more
 business.
 
 The scroller works by replacing the current text string with a similar text string, but with the first letter shifted to

kata/6-kyu/convert-integer-to-whitespace-format/README.md

@@ -2,7 +2,7 @@
 
 Hereinafter, `[space]` refers to `" "`, `[tab]` refers to `"\t"`, and `[LF]` refers to `"\n"` for illustrative purposes. This does not mean that you can use these placeholders in your solution.
 
-In esoteric language called [Whitespace](http://compsoc.dur.ac.uk/whitespace/), numbers are represented in the following format:
+In esoteric language called [Whitespace](https://esolangs.org/wiki/whitespace), numbers are represented in the following format:
 
 * first character represents the sign: `[space]` for plus, `[tab]` for minus;
 * characters after that and until `[LF]` are the binary representation of the integer: `[space]` for 0, `[tab]` for 1.

kata/6-kyu/data-compression-using-run-length-encoding/README.md

@@ -1,7 +1,10 @@
 # [Data compression using run-length encoding](https://www.codewars.com/kata/data-compression-using-run-length-encoding "https://www.codewars.com/kata/578bf2d8daa01a4ee8000046")
 
-[Run-length encoding](http://en.wikipedia.org/wiki/Run-length_encoding) (RLE) is a very simple form of lossless data compression in which runs of data are stored as a single data value and count.
+[Run-length encoding](https://en.wikipedia.org/wiki/Run-length_encoding) (RLE) is a very simple form of lossless data
+compression in which runs of data are stored as a single data value and count.
 
-A simple form of RLE would encode the string `"AAABBBCCCD"` as `"3A3B3C1D"` meaning, first there are `3 A`, then `3 B`, then `3 C` and last there is `1 D`.
+A simple form of RLE would encode the string `"AAABBBCCCD"` as `"3A3B3C1D"` meaning, first there are `3 A`, then `3 B`,
+then `3 C` and last there is `1 D`.
 
-Your task is to write a RLE encoder and decoder using this technique. The texts to encode will always consist of only uppercase characters, no numbers.
+Your task is to write a RLE encoder and decoder using this technique. The texts to encode will always consist of only
+uppercase characters, no numbers.

kata/6-kyu/disease-spread/README.md

@@ -53,4 +53,4 @@ epidemic(tm, n, s0, i0, b, a) --> 483
 
 - Keeping track of the values of susceptible, infected and recovered you can plot the solutions of the 3 differential equations. See an example below on the plot.
 
-![alternative text](http://i.imgur.com/xB6VSqzm.png)
+![alternative text](https://i.imgur.com/xB6VSqzm.png)

kata/6-kyu/easy-diagonal/README.md

@@ -23,6 +23,6 @@ diagonal(20, 4) => 20349
 When following a diagonal from top to bottom have a look at the numbers on the diagonal at its right.
 
 ## Ref:
-http://mathworld.wolfram.com/BinomialCoefficient.html
+https://mathworld.wolfram.com/BinomialCoefficient.html
 
-![alternative text](http://i.imgur.com/eUGaNvIm.jpg)
+![alternative text](https://i.imgur.com/eUGaNvIm.jpg)