feat(solutions): add offset-arrays/python/function

.gitpod.yml

@@ -3,8 +3,8 @@ image: 'gitpod/workspace-full'
 tasks:
   - name: 'programming-challenges'
     before: 'npm install'
-    init: 'npm run build && npm install --global'
-    command: 'programming-challenges'
+    init: 'npm run build'
+    command: 'npm install --global && programming-challenges'
 
 github:
   prebuilds:

CONTRIBUTING.md

@@ -36,7 +36,7 @@ You can add support for a new language, so you can solve the challenges with eve
 - Create a new template inside `templates/solution` folder with the file extension of the new programming language, with the basic boilerplate to read from `stdin` and print to `stdout` the result
 - Every programming language should have at least one working solution for `challenges/hello-world`.
 
-To do so, run the command `programming-challenges generate solution --challenge="hello-world" --github-user="<your-github-user>" --language="<your-new-language>" --solution="function`
+  To generate the solution for the `hello-world` challenge with your new language, run the command `programming-challenges generate solution --challenge="hello-world" --github-user="<your-github-user>" --language="<your-new-language>" --solution="function"`
 
 Before submitting the new programming language, make sure it passes all the tests by running `programming-challenges run test --affected`
 

challenges/offset-arrays/solutions/python/function/README.md

@@ -0,0 +1,3 @@
+# offset-arrays/python/function
+
+Created by [@Divlo](https://github.com/Divlo) on 4 October 2021.

challenges/offset-arrays/solutions/python/function/solution.py

@@ -0,0 +1,64 @@
+from typing import List
+import sys
+
+input_values: List[str] = []
+for value in sys.stdin:
+    input_values.append(value.rstrip('\n'))
+
+
+class AssignmentArray:
+    def __init__(self, assignment: str) -> None:
+        identifier = assignment.split('[')[0]
+        rest = assignment.split('[')[1]
+        indexes = rest.split(']')[0]
+        values_string = rest.split(']')[1]
+        first_index_string = indexes.split('..')[0]
+        last_index_string = indexes.split('..')[1]
+        first_index = int(first_index_string)
+        last_index = int(last_index_string)
+        numbers_string = values_string.split('=')[1]
+        numbers_string_array = numbers_string.strip().split(' ')
+        numbers = [int(number) for number in numbers_string_array]
+        values = {}
+        index = 0
+        for virtual_index in range(first_index, last_index + 1):
+            values[virtual_index] = numbers[index]
+            index += 1
+
+        self.identifier = identifier
+        self.first_index = first_index
+        self.last_index = last_index
+        self.values = values
+
+    def get_by_index(self, index: int) -> int:
+        return self.values[index]
+
+
+assignments = {}
+assignments_length = int(input_values[0])
+assignment_index = 0
+for assignment_index in range(0, assignments_length):
+    assignment = input_values[assignment_index + 1]
+    assignment_array = AssignmentArray(assignment)
+    assignments[assignment_array.identifier] = assignment_array
+assignment_index += 1
+
+operation = input_values[assignment_index + 1]
+simplified_operation = operation.split(']')[0]
+nested = simplified_operation.split('[')
+last_operation_index = len(nested) - 1
+operation_identifiers = nested[0:last_operation_index]
+operation_index = 0
+operations_index = int(nested[last_operation_index])
+
+current_value = None
+for index in range(len(operation_identifiers) - 1, -1, -1):
+    current_identifier = operation_identifiers[index]
+    if current_value == None:
+        current_value = assignments[current_identifier].get_by_index(
+            operations_index)
+    else:
+        current_value = assignments[current_identifier].get_by_index(
+            current_value)
+
+print(current_value)

challenges/offset-arrays/solutions/typescript/function/README.md

@@ -1,3 +0,0 @@
-# offset-arrays/typescript/function
-
-Created by [@Divlo](https://github.com/Divlo) on 29 June 2021.

challenges/offset-arrays/solutions/typescript/function/solution.ts

@@ -1,88 +0,0 @@
-import readline from 'node:readline'
-
-const input: string[] = []
-const readlineInterface = readline.createInterface({
-  input: process.stdin,
-  output: process.stdout
-})
-readlineInterface.on('line', (value) => {
-  input.push(value)
-})
-readlineInterface.on('close', solution)
-
-interface AssignmentValues {
-  [key: string]: number
-}
-
-interface Assignments {
-  [key: string]: AssignmentArray
-}
-
-class AssignmentArray {
-  public identifier: string
-  public firstIndex: number
-  public lastIndex: number
-  public values: AssignmentValues
-
-  constructor(assignment: string) {
-    const [identifier, rest] = assignment.split('[')
-    const [indexes, valuesString] = rest.split(']')
-    const [firstIndexString, lastIndexString] = indexes.split('..')
-    const firstIndex = parseInt(firstIndexString)
-    const lastIndex = parseInt(lastIndexString)
-
-    const [, numbersString] = valuesString.split('=')
-    const numbersStringArray = numbersString.trim().split(' ')
-    const numbers = numbersStringArray.map((number) => Number(number))
-    const values: AssignmentValues = {}
-    let index = 0
-    for (
-      let virtualIndex = firstIndex;
-      virtualIndex <= lastIndex;
-      virtualIndex++
-    ) {
-      values[virtualIndex] = numbers[index]
-      index++
-    }
-
-    this.identifier = identifier
-    this.firstIndex = firstIndex
-    this.lastIndex = lastIndex
-    this.values = values
-  }
-
-  public getByIndex(index: number): number {
-    return this.values[index]
-  }
-}
-
-function solution(): void {
-  const assignments: Assignments = {}
-  const assignmentsLength = parseInt(input[0])
-  let assignmentIndex = 0
-  for (
-    assignmentIndex = 0;
-    assignmentIndex < assignmentsLength;
-    assignmentIndex++
-  ) {
-    const assignment = input[assignmentIndex + 1]
-    const assignmentArray = new AssignmentArray(assignment)
-    assignments[assignmentArray.identifier] = assignmentArray
-  }
-  const operation = input[assignmentIndex + 1]
-  const [simplifiedOperation] = operation.split(']')
-  const nested = simplifiedOperation.split('[')
-  const lastOperationIndex = nested.length - 1
-  const operationIdentifiers = nested.slice(0, lastOperationIndex)
-  const operationIndex = parseInt(nested[lastOperationIndex])
-  let currentValue: number | null = null
-  for (let index = operationIdentifiers.length - 1; index >= 0; index--) {
-    const currentIdentifier = operationIdentifiers[index]
-    if (currentValue == null) {
-      currentValue = assignments[currentIdentifier].getByIndex(operationIndex)
-    } else {
-      currentValue = assignments[currentIdentifier].getByIndex(currentValue)
-    }
-  }
-  console.log(currentValue)
-}