fix(challenges): G problems

curriculum/challenges/english/08-coding-interview-prep/rosetta-code/gaussian-elimination.english.md

@@ -6,7 +6,9 @@ challengeType: 5
 
 ## Description
 <section id='description'>
-Write a function to solve \(A.x = b\) using Gaussian elimination then backwards substitution. \(A\) being an \(n \times n\) matrix. Also, \(x\) and \(b\) are \(n\) by 1 vectors. To improve accuracy, please use partial pivoting and scaling.
+Write a function to solve \(Ax = b\) using Gaussian elimination then backwards substitution.
+\(A\) being an \(n \times n\) matrix. Also, \(x\) and \(b\) are \(n\) by 1 vectors.
+To improve accuracy, please use partial pivoting and scaling.
 </section>
 
 ## Instructions

curriculum/challenges/english/08-coding-interview-prep/rosetta-code/generate-lower-case-ascii-alphabet.english.md

@@ -6,7 +6,7 @@ challengeType: 5
 
 ## Description
 <section id='description'>
-Write a function to generate an array of lower case ASCII characters, for a given range. For example: for range 1 to 4 the function should return <code>['a','b','c','d']</code>.
+Write a function to generate an array of lower case ASCII characters for a given range. For example, given the range <code>['a', 'd']</code>, the function should return <code>['a', 'b', 'c', 'd']</code>.
 </section>
 
 ## Instructions

curriculum/challenges/english/08-coding-interview-prep/rosetta-code/generatorexponential.english.md

@@ -9,14 +9,13 @@ challengeType: 5
 A generator is an executable entity (like a function or procedure) that contains code that yields a sequence of values, one at a time, so that each time you call the generator, the next value in the sequence is provided.
 Generators are often built on top of coroutines or objects so that the internal state of the object is handled “naturally”.
 Generators are often used in situations where a sequence is potentially infinite, and where it is possible to construct the next value of the sequence with only minimal state.
-Write a function that uses generators to generate squares and cubes. Create a new generator that filters all cubes from the generator of squares.
-The function should return the \( n^{th} \) value of the filtered generator.
-For example for \(n=7\), the function should return 81 as the sequence would be 4,9,16,25,36,49,81. Here 64 is filtered out, as it is a cube.
 </section>
 
 ## Instructions
 <section id='instructions'>
-
+Write a function that uses generators to generate squares and cubes. Create a new generator that filters all cubes from the generator of squares.
+The function should return the \( n^{th} \) value of the filtered generator.
+For example for \(n=7\), the function should return 81 as the sequence would be 4, 9, 16, 25, 36, 49, 81. Here 64 is filtered out, as it is a cube.
 </section>
 
 ## Tests

curriculum/challenges/english/08-coding-interview-prep/rosetta-code/gray-code.english.md

@@ -6,21 +6,34 @@ challengeType: 5
 
 ## Description
 <section id='description'>
-<a href="https://en.wikipedia.org/wiki/Gray code">Gray code</a> is a form of binary encoding where transitions between consecutive numbers differ by only one bit.
+<a href="https://en.wikipedia.org/wiki/Gray code" target="_blank">Gray code</a> is a form of binary encoding where transitions between consecutive numbers differ by only one bit.
 This is a useful encoding for reducing hardware data hazards with values that change rapidly and/or connect to slower hardware as inputs.
-It is also useful for generating inputs for <a href="https://en.wikipedia.org/wiki/Karnaugh map">Karnaugh maps</a> in order from left to right or top to bottom.
-Create a function to encode a number to and decode a number from Gray code. The function should will have 2 parameters.
-The first would be a boolean. The function should encode for true and decode for false. The second parameter would be the number to be encoded/decoded.
-Display the normal binary representations, Gray code representations, and decoded Gray code values for all 5-bit binary numbers (0-31 inclusive, leading 0's not necessary).
-There are many possible Gray codes. The following encodes what is called "binary reflected Gray code."<br>Encoding (MSB is bit 0, b is binary, g is Gray code):
-<code><br>if b[i-1] = 1<br><span style="padding-left:1em">g[i] = not b[i]</span><br>else<br><span style="padding-left:1em">g[i] = b[i]</span><br>
-</code>  Or: <br><code> g = b xor (b logically right shifted 1 time)</code><br>Decoding (MSB is bit 0, b is binary, g is Gray code): <br>
-<code>b[0] = g[0]<br>for other bits:<br>b[i] = g[i] xor b[i-1]<br></code>
+It is also useful for generating inputs for <a href="https://en.wikipedia.org/wiki/Karnaugh map" target="_blank">Karnaugh maps</a> in order from left to right or top to bottom.
 </section>
 
 ## Instructions
 <section id='instructions'>
-
+Create a function to encode a number to and decode a number from Gray code. The function should will have 2 parameters.
+The first would be a boolean. The function should encode for true and decode for false. The second parameter would be the number to be encoded/decoded.
+Display the normal binary representations, Gray code representations, and decoded Gray code values for all 5-bit binary numbers (0-31 inclusive, leading 0's not necessary).
+There are many possible Gray codes. The following encodes what is called "binary reflected Gray code."
+Encoding (MSB is bit 0, b is binary, g is Gray code):
+<pre>
+if b[i-1] = 1
+  g[i] = not b[i]
+else
+  g[i] = b[i]
+</pre>
+Or:
+<pre>
+g = b xor (b logically right shifted 1 time)
+</pre>
+Decoding (MSB is bit 0, b is binary, g is Gray code):
+<pre>
+b[0] = g[0]<br>
+for other bits:
+b[i] = g[i] xor b[i-1]
+</pre>
 </section>
 
 ## Tests

curriculum/challenges/english/08-coding-interview-prep/rosetta-code/greatest-subsequential-sum.english.md

@@ -87,8 +87,6 @@ function maximumSubsequence(population) {
   return greatest;
 }
 
-
-
 ```
 
 </section>