diff --git a/exercises/practice/hamming/.docs/instructions.md b/exercises/practice/hamming/.docs/instructions.md index 020fdd02d4e..b9ae6efc516 100644 --- a/exercises/practice/hamming/.docs/instructions.md +++ b/exercises/practice/hamming/.docs/instructions.md @@ -1,6 +1,6 @@ # Instructions -Calculate the Hamming Distance between two DNA strands. +Calculate the Hamming distance between two DNA strands. Your body is made up of cells that contain DNA. Those cells regularly wear out and need replacing, which they achieve by dividing into daughter cells. @@ -9,18 +9,18 @@ In fact, the average human body experiences about 10 quadrillion cell divisions When cells divide, their DNA replicates too. Sometimes during this process mistakes happen and single pieces of DNA get encoded with the incorrect information. If we compare two strands of DNA and count the differences between them we can see how many mistakes occurred. -This is known as the "Hamming Distance". +This is known as the "Hamming distance". -We read DNA using the letters C,A,G and T. +We read DNA using the letters C, A, G and T. Two strands might look like this: GAGCCTACTAACGGGAT CATCGTAATGACGGCCT ^ ^ ^ ^ ^ ^^ -They have 7 differences, and therefore the Hamming Distance is 7. +They have 7 differences, and therefore the Hamming distance is 7. -The Hamming Distance is useful for lots of things in science, not just biology, so it's a nice phrase to be familiar with :) +The Hamming distance is useful for lots of things in science, not just biology, so it's a nice phrase to be familiar with :) ## Implementation notes diff --git a/exercises/practice/hamming/.meta/config.json b/exercises/practice/hamming/.meta/config.json index 1280ded9127..117a2d954d0 100644 --- a/exercises/practice/hamming/.meta/config.json +++ b/exercises/practice/hamming/.meta/config.json @@ -31,7 +31,7 @@ ".meta/example.py" ] }, - "blurb": "Calculate the Hamming difference between two DNA strands.", + "blurb": "Calculate the Hamming distance between two DNA strands.", "source": "The Calculating Point Mutations problem at Rosalind", "source_url": "https://rosalind.info/problems/hamm/" } diff --git a/exercises/practice/luhn/.docs/instructions.md b/exercises/practice/luhn/.docs/instructions.md index 8cbe791fc23..49934c10646 100644 --- a/exercises/practice/luhn/.docs/instructions.md +++ b/exercises/practice/luhn/.docs/instructions.md @@ -22,7 +22,8 @@ The first step of the Luhn algorithm is to double every second digit, starting f We will be doubling ```text -4_3_ 3_9_ 0_4_ 6_6_ +4539 3195 0343 6467 +↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ (double these) ``` If doubling the number results in a number greater than 9 then subtract 9 from the product. diff --git a/exercises/practice/pov/.meta/config.json b/exercises/practice/pov/.meta/config.json index cdc96ff934a..44527ba940d 100644 --- a/exercises/practice/pov/.meta/config.json +++ b/exercises/practice/pov/.meta/config.json @@ -22,5 +22,5 @@ }, "blurb": "Reparent a graph on a selected node.", "source": "Adaptation of exercise from 4clojure", - "source_url": "https://www.4clojure.com/" + "source_url": "https://github.com/oxalorg/4ever-clojure" } diff --git a/exercises/practice/rna-transcription/.docs/instructions.md b/exercises/practice/rna-transcription/.docs/instructions.md index 36da381f5a7..4dbfd3a2719 100644 --- a/exercises/practice/rna-transcription/.docs/instructions.md +++ b/exercises/practice/rna-transcription/.docs/instructions.md @@ -1,12 +1,12 @@ # Instructions -Your task is determine the RNA complement of a given DNA sequence. +Your task is to determine the RNA complement of a given DNA sequence. Both DNA and RNA strands are a sequence of nucleotides. -The four nucleotides found in DNA are adenine (**A**), cytosine (**C**), guanine (**G**) and thymine (**T**). +The four nucleotides found in DNA are adenine (**A**), cytosine (**C**), guanine (**G**), and thymine (**T**). -The four nucleotides found in RNA are adenine (**A**), cytosine (**C**), guanine (**G**) and uracil (**U**). +The four nucleotides found in RNA are adenine (**A**), cytosine (**C**), guanine (**G**), and uracil (**U**). Given a DNA strand, its transcribed RNA strand is formed by replacing each nucleotide with its complement: diff --git a/exercises/practice/sublist/.docs/instructions.md b/exercises/practice/sublist/.docs/instructions.md index 7535931afa8..8228edc6ce2 100644 --- a/exercises/practice/sublist/.docs/instructions.md +++ b/exercises/practice/sublist/.docs/instructions.md @@ -8,8 +8,8 @@ Given any two lists `A` and `B`, determine if: - None of the above is true, thus lists `A` and `B` are unequal Specifically, list `A` is equal to list `B` if both lists have the same values in the same order. -List `A` is a superlist of `B` if `A` contains a sub-sequence of values equal to `B`. -List `A` is a sublist of `B` if `B` contains a sub-sequence of values equal to `A`. +List `A` is a superlist of `B` if `A` contains a contiguous sub-sequence of values equal to `B`. +List `A` is a sublist of `B` if `B` contains a contiguous sub-sequence of values equal to `A`. Examples: