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Getting the value of an integer array from LIST<>


Getting the value of an integer array from LIST<>

By : 于兴宇
Date : October 28 2020, 08:00 PM
this one helps. pattern is a List. When you do .ToString() on that it's on the whole object (i.e. all of the items, not just one). List doesn't provide a way to display the items, so it just returns the type.
To display one number at a time you'll want to do this instead:
code :
pattern[counter].ToString()


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SabreAMF: PHP Integer array to Java Integer List

SabreAMF: PHP Integer array to Java Integer List


By : foo
Date : March 29 2020, 07:55 AM
wish of those help There are only Doubles in AMF0. So you need to change the type to Double.
You can get integer support if you use AMF3:
code :
    $client = new SabreAMF_Client('https://xxx');
    $client->setEncoding(SabreAMF_Const::AMF3);
    return $client->sendRequest($service.'.'.$method,$params);
storing an integer array into a list integer array and accessing those variables in order

storing an integer array into a list integer array and accessing those variables in order


By : Sanvanis Toh
Date : March 29 2020, 07:55 AM
this one helps. I suggest you use a List (like ArrayList) instead of an array as the size of it can change. As such:
code :
ArrayList wholeList = new ArrayList<Integer>();
for(int x = 0; x < fline; x++)
    {
        parts = wholef[x].split(" ");
        for(int n = 0; n < parts.length; n++)
        {
            wholeList.add(Integer.parseInt(parts[n]));
        }
    }
Convert a List<List<Long,Float,Float,Integer,Integer>> to Array<StructType> in Spark Scala

Convert a List<List<Long,Float,Float,Integer,Integer>> to Array<StructType> in Spark Scala


By : Matt Stromberg
Date : March 29 2020, 07:55 AM
this one helps. For testing purpose, I created a test dataframe with the string mentioned in the question as
code :
val df = Seq(
  Tuple1("[[337, -115.0, -17.5, 6225, 189],[85075, -112.0, -12.5, 6225, 359]]")
).toDF("col")
+-------------------------------------------------------------------+
|col                                                                |
+-------------------------------------------------------------------+
|[[337, -115.0, -17.5, 6225, 189],[85075, -112.0, -12.5, 6225, 359]]|
+-------------------------------------------------------------------+

root
 |-- col: string (nullable = true)
import org.apache.spark.sql.functions._
def convertToListOfListComplex = udf((ListOfList: String) => {
  ListOfList.split("],\\[")
    .map(x => x.replaceAll("[\\]\\[]", "").split(","))
    .map(splitted => rowTest(splitted(0).trim.toLong, splitted(1).trim.toFloat, splitted(2).trim.toFloat, splitted(3).trim.toInt, splitted(4).trim.toInt))
})
case class rowTest(a: Long, b: Float, c: Float, d: Int, e: Int)
df.withColumn("converted", convertToListOfListComplex(col("col")))
+-------------------------------------------------------------------+--------------------------------------------------------------------+
|col                                                                |converted                                                           |
+-------------------------------------------------------------------+--------------------------------------------------------------------+
|[[337, -115.0, -17.5, 6225, 189],[85075, -112.0, -12.5, 6225, 359]]|[[337, -115.0, -17.5, 6225, 189], [85075, -112.0, -12.5, 6225, 359]]|
+-------------------------------------------------------------------+--------------------------------------------------------------------+


root
 |-- col: string (nullable = true)
 |-- converted: array (nullable = true)
 |    |-- element: struct (containsNull = true)
 |    |    |-- a: long (nullable = false)
 |    |    |-- b: float (nullable = false)
 |    |    |-- c: float (nullable = false)
 |    |    |-- d: integer (nullable = false)
 |    |    |-- e: integer (nullable = false)
import org.apache.spark.sql.functions._
def convertToListOfListComplex = udf((ListOfList: String) => {
  ListOfList.split("],\\[")
    .map(x => x.replaceAll("[\\]\\[]", "").split(","))
    .map(splitted => rowTest(Try(splitted(0).trim.toLong).getOrElse(0L), Try(splitted(1).trim.toFloat).getOrElse(0F), Try(splitted(2).trim.toFloat).getOrElse(0F), Try(splitted(3).trim.toInt).getOrElse(0), Try(splitted(4).trim.toInt).getOrElse(0)))
})
Add items dynamically to List<Integer> and convert to Integer[] Array

Add items dynamically to List<Integer> and convert to Integer[] Array


By : noreen delada
Date : March 29 2020, 07:55 AM
To fix the issue you can do The first and foremost problem with your code is that you are looking over the components array and there is no such field defined in your method but instead according to your problem statement it should be
code :
switch (s[i])
import java.io.*;
import java.util.*;
class Test
{
public static void main(String args[])throws IOException
{

   List<Integer> I = new ArrayList<Integer>();
    String[] s = {"Light", "Sun", "Sun", "Water"}; 
    String[] ss = {"on", "off", "on", "off"};
    for(int i = 0; i < s.length; i++) { 
        switch (s[i]) { 
            case "Light": 
            if (ss[i]=="on") 
            I.add(1); 
            else 
            I.add(2); 
            case "Sun": 
            if (ss[i]=="on") 
            I.add(3); 
            else 
            I.add(4); 
            case "Water": 
            if (ss[i]=="on") 
            I.add(5); 
            else 
            I.add(6); 
            case "Gravel": 
            if (ss[i]=="on") 
            I.add(7); 
            else 
            I.add(8); 
            } 
            System.out.println(I+" at i="+i);
        } 
    Integer[] arr = I.toArray(new Integer[I.size()]);
    System.out.println(I);
}
}
[1, 3, 5, 7] at i=0
[1, 3, 5, 7, 4, 6, 8] at i=1
[1, 3, 5, 7, 4, 6, 8, 3, 5, 7] at i=2
[1, 3, 5, 7, 4, 6, 8, 3, 5, 7, 6, 8] at i=3
[1, 3, 5, 7, 4, 6, 8, 3, 5, 7, 6, 8]
import java.io.*;
import java.util.*;
class Test
{
public static void main(String args[])throws IOException
{

   List<Integer> I = new ArrayList<Integer>();
    String[] s = {"Light", "Sun", "Sun", "Water"}; 
    String[] ss = {"on", "off", "on", "off"};
    for(int i = 0; i < s.length; i++) { 
        switch (s[i]) { 
            case "Light": 
            if (ss[i]=="on") 
            I.add(1); 
            else 
            I.add(2);
            break;
            case "Sun": 
            if (ss[i]=="on") 
            I.add(3); 
            else 
            I.add(4);
            break; 
            case "Water": 
            if (ss[i]=="on") 
            I.add(5); 
            else 
            I.add(6);
            break;
            case "Gravel": 
            if (ss[i]=="on") 
            I.add(7); 
            else 
            I.add(8); 
            break;
            } 
            System.out.println(I+" at i="+i);
        } 
    Integer[] arr = I.toArray(new Integer[I.size()]);
    System.out.println(I);
}
}
[1] at i=0
[1, 4] at i=1
[1, 4, 3] at i=2
[1, 4, 3, 6] at i=3
[1, 4, 3, 6]
Convert Nested List of Integers to a two dimensional array using Streams ( List<List<Integer>> -> int[][]

Convert Nested List of Integers to a two dimensional array using Streams ( List<List<Integer>> -> int[][]


By : user3255860
Date : March 29 2020, 07:55 AM
wish helps you I searched for similar questions but I found only for the object String which dont apply to this case: , You only need to make a few modifications to the String[][] solution:
code :
List<List<Integer>> lists = ...;
int[][] arrays = lists.stream()                                // Stream<List<Integer>>
        .map(list -> list.stream().mapToInt(i -> i).toArray()) // Stream<int[]>
        .toArray(int[][]::new);
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