feat(collections): 🎸 calculations, translated

Refers: #10

Author: rcmoutinho

book/08-java-collections/sections/04-calculations.asc

@@ -1,93 +1,92 @@
 :java-package: src/org/j6toj8/collections
 :section-java-package: ../../../{java-package}
 
-=== Fazendo cálculos e coletando resultados de Streams
+=== Perform Calculations and Collecting Streams Results
 
-.Objetivo
+.Objective
 --------------------------------------------------
 Perform calculations on Java Streams by using count, max, min, average, and sum methods and save results to a collection by using the collect method and Collector class, including the averagingDouble, groupingBy, joining, partitioningBy methods
--
-Realizar cálculos em Streams usando os métodos count, max, min, average, e sum e salvar resultados em uma coleção usando o método collect e a classe Collector, incluindo os métodos averagingDouble, groupingBy, joining, partitioningBy
 --------------------------------------------------
 
-. É possível pegar o maior ou menor valor, ou a quantidade de elementos da coleção.
+. You can get the largest or smallest value, or the number of elements in the collection.
 +
 [source,java,indent=0]
 .{java-package}/calculations/Collections_MaxMinCount.java
 ----
 include::{section-java-package}/calculations/Collections_MaxMinCount.java[tag=code]
 ----
 +
-.Saída no console
+.console output
 [source,console]
 ----
 Max: 9
 Min: 1
 Count: 9
 ----
 
-. É possível pegar a média dos valores da coleção.
+. You can take the average of the collection values.
 +
 [source,java,indent=0]
 .{java-package}/calculations/Collections_AveragingDouble.java
 ----
 include::{section-java-package}/calculations/Collections_AveragingDouble.java[tag=code]
 ----
 +
-.Saída no console
+.console output
 [source,console]
 ----
 Média: 5.0
 ----
 
-. É possível agrupar os valores da coleção por uma regra específica.
+. You can group collection values by a specific rule.
 +
 [source,java,indent=0]
 .{java-package}/calculations/Collections_GroupingBy.java
 ----
 include::{section-java-package}/calculations/Collections_GroupingBy.java[tag=code]
 ----
 +
-.Saída no console
+.console output
 [source,console]
 ----
-Mapa de resto da divisão por 3: {0=[3, 6, 9], 1=[1, 4, 7], 2=[2, 5, 8]}
+Map of rest of division by 3: {0=[3, 6, 9], 1=[1, 4, 7], 2=[2, 5, 8]}
 ----
 
-. É possível concatenar os valores da coleção.
+. You can concatenate the collection values.
 +
 [source,java,indent=0]
 .{java-package}/calculations/Collections_Joining.java
 ----
 include::{section-java-package}/calculations/Collections_Joining.java[tag=code]
 ----
 +
-.Saída no console
+.console output
 [source,console]
 ----
-Junção dos valores como String: 123456789
+Join values as String: 123456789
 ----
 
-. É possível separar os valores da coleção em um mapa com chaves `true` e `false`, de acordo com uma função lambda.
+. You can separate collection values in a map with `true` and `false` keys, according to a lambda function.
 +
 [source,java,indent=0]
 .{java-package}/calculations/Collections_PartitioningBy.java
 ----
 include::{section-java-package}/calculations/Collections_PartitioningBy.java[tag=code]
 ----
 +
-.Saída no console
+.console output
 [source,console]
 ----
-Mapa de pares e ímpares: {false=[1, 3, 5, 7, 9], true=[2, 4, 6, 8]}
+Even and odd map: {false=[1, 3, 5, 7, 9], true=[2, 4, 6, 8]}
 ----
 
+.References
 ****
 
 * Using Streams
 +
-Boyarsky, Jeanne; Selikoff, Scott. OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide (p. 185). Wiley. Edição do Kindle. 
+Boyarsky, Jeanne; Selikoff, Scott. OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide (p. 185). Wiley. Kindle Edition.
 
 * https://www.baeldung.com/java-8-streams[The Java 8 Stream API Tutorial.]
 
-****
+****

src/org/j6toj8/collections/calculations/Collections_GroupingBy.java

@@ -11,10 +11,10 @@ public static void main(String[] args) {
     // tag::code[]
     List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9);
 
-    Map<Integer, List<Integer>> mapaDivisaoPor3 = list.stream()
+    Map<Integer, List<Integer>> mapDivisionBy3 = list.stream()
       .collect(Collectors.groupingBy(n -> n % 3));
 
-    System.out.println("Mapa de resto da divisão por 3: " + mapaDivisaoPor3);
+    System.out.println("Map of rest of division by 3: " + mapDivisionBy3);
     // end::code[]
   }
  }

src/org/j6toj8/collections/calculations/Collections_Joining.java

@@ -10,11 +10,11 @@ public static void main(String[] args) {
     // tag::code[]
     List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9);
 
-    String juncao = list.stream()
+    String join = list.stream()
       .map(n -> n.toString())
       .collect(Collectors.joining());
 
-    System.out.println("Junção dos valores como String: " + juncao);
+    System.out.println("Join values as String: " + join);
     // end::code[]
   }
  }

src/org/j6toj8/collections/calculations/Collections_MaxMinCount.java

@@ -11,17 +11,17 @@ public static void main(String[] args) {
     List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9);
 
     OptionalInt max = list.stream()
-      .mapToInt(Integer::intValue) // transforma para int
+      .mapToInt(Integer::intValue) // transform to int
       .max();
     System.out.println("Max: " + max.getAsInt());
 
     OptionalInt min = list.stream()
-        .mapToInt(Integer::intValue) // transforma para int
+        .mapToInt(Integer::intValue) // transform to int
         .min();
       System.out.println("Min: " + min.getAsInt());
 
     long count = list.stream()
-        .mapToInt(Integer::intValue) // transforma para int
+        .mapToInt(Integer::intValue) // transform to int
         .count();
       System.out.println("Count: " + count);
     // end::code[]

src/org/j6toj8/collections/calculations/Collections_PartitioningBy.java

@@ -11,10 +11,10 @@ public static void main(String[] args) {
     // tag::code[]
     List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9);
 
-    Map<Boolean, List<Integer>> mapaParImpar = list.stream()
+    Map<Boolean, List<Integer>> mapEvenOdd = list.stream()
       .collect(Collectors.partitioningBy(n -> n % 2 == 0));
 
-    System.out.println("Mapa de pares e ímpares: " + mapaParImpar);
+    System.out.println("Even and odd map: " + mapEvenOdd);
     // end::code[]
   }
  }