Andrzej Borucki

I have activity_main.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <EditText        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="EditText" />    <Button        android:layout_width="match_parent"        android:layout_height="fill_parent"        android:text="Control" />    <TextView        android:layout_width="match_parent"        android:layout_height="100px"        android:text="TextView" /> </LinearLayout>
I want some:


but is


No textview displayed. Control with fill_parent must be last , but I want some controls below.
Which layout I must use (Linear? Relative? Constraint?) and how?

I test example from github android/location-samples/LocationAddress. On physical smartphone it works great but on emulator not. I test both emulator map or telnet 5554. Do you have similar problem on this example?

I try:
static void recurFindTuples(int depth, int maxdepth, int start, Integer[] halftuple, ArrayList<Integer> factors, ArrayList<Integer[]> result) {            for (int i = start; i < factors.size(); i++) {                Integer[] tuple;                tuple = new Integer[depth];                for (int j=0; j<depth-1; j++)                    tuple[j] = halftuple[j];                tuple[depth-1] = factors.get(i);                if (depth<maxdepth)                    recurFindTuples(depth+1, maxdepth, i+1, tuple, factors, result);                else                    result.add(tuple);            }    }    static ArrayList<Integer[]> findTuples(ArrayList<Integer> factors, int depth) {        Integer[] pair;        ArrayList<Integer[]> result = new ArrayList<Integer[]>();        recurFindTuples(1, depth, 0, null, factors, result);        return result;    }

I try get pairs and typle size N from list.
   static ArrayList<Integer[]> findPairs(ArrayList<Integer> factors) {        Integer[] pair;        ArrayList<Integer[]> result = new ArrayList<Integer[]>();        for (int i = 0; i < factors.size(); i++)            for (int j = i+1; j < factors.size(); j++) {                pair = new Integer[2];                pair[0] = factors.get(i);                pair[1] = factors.get(j);                result.add(pair);            }        return result;    }    static ArrayList<Integer[]> findTuple3(ArrayList<Integer> factors) {        Integer[] pair;        ArrayList<Integer[]> result = new ArrayList<Integer[]>();        for (int i = 0; i < factors.size(); i++)            for (int j = i+1; j < factors.size(); j++)                for (int k = j+1; k < factors.size(); k++) {                pair = new Integer[3];                pair[0] = factors.get(i);                pair[1] = factors.get(j);                pair[2] = factors.get(k);                result.add(pair);            }        return result;    }

For pairs is lopp in loop, for N=3 is loop in loop in loop and so on.
How can I write parametrixed method? Recursion is needed?

I heard about it,but can't find by Google: humans created only application skeleton which was automatically filled by Java code based on Github samples. Where can I find by Google?

Zach Rode wrote:So I might be misunderstanding your question but why don't you return a collection or array? Those can contain objects or primitives(collections autoboxes primitives to their object type, just fyi)

public interface IPart { void copy_row(Row prow); int[] visit_col(Col pcol); int[] visit_row(Row prow); Matrix[] sm_block_partition(); }
and if I wanna returns Matrix+Matrix +int? it simply Object[] sm_block_partition() ?

How to deal with the elegant way of returning many variables. No pointers, no parameter reference, no make_pair.
Sample:
package sparse;

here is code moved from C++

public interface IPart { void copy_row(Row prow); int visit_col(Col pcol, int *rows_visited, int *cols_visited); int visit_row(Row prow, int *rows_visited, int *cols_visited); int sm_block_partition(Matrix **L, Matrix **R); }
visit_col must fill row visited and cols_visited
sm_block_partition must returns two objects;

better is return object with two or three objects or additional methods like return_last_computed_by_other_method_rows_visited ?

I found something https://sweetcode.io/calling-java-code-from-cc-transparently/

I have big C++ program which can't rewrite to Java.
This program must works with HBase.
HBase has nice Java interface, uses many *.jar's distributed by HBase.
How to use Java classes like shared library?
Reverse situation : Java using C is more popular by JNI.
This situation is also JNI? How do it? Where are examples (github?)

I make test million quartic equations in C++,C# nad Java: https://github.com/borneq/quartic
On Intel I3, one thread, release C++ and C#, beyond IDE,
C++ 5.99 s
C++ 64 bits 4.91 s.
C# - 5.12
Java 2.64 s!
Why Java time is so good? C++ operates on stack without new/delete, floating-point operations depends on hardware (coprocessor), the same Complex lib.
Java is the base for numeric? Unfortunately Java has not operators overloading, that is nice for complex, vectors and matrices.

I want compile https://github.com/mapsme/api-android/blob/master/sample-app-capitals/build.gradle and I must use Gradle.
In https://gradle.org/install/ I see: $ scoop install gradle
but how install scoop?
in http://scoop.sh/ I see: iex (new-object net.webclient).downloadstring('https://get.scoop.sh')
but not iex, I can't install Powershell because can't install Windows6.1-KB2506143-x64.msu

"sudo" in title is error

For example : export JAVA_HOME=/usr/local/jdk1.8.0_144
but my java -version is

$ java -version
openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-04-14-195246.buildd.src)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-04-14-195246.buildd.src, mixed mode)

$ which java is simple: /usr/bin/java
link to Java is : /usr/lib/jvm/java-1.9.0-openjdk-amd64/bin/java

JAVA_HOME will be /usr/lib/jvm/java-1.9.0-openjdk-amd64 or /usr ?

How determine from Java is system (Linux) is 32 or 64 bit?

I see JNI is usable with DLL. I must use it with (maybe) static and C++ with mangled names. I want call LLVM low level virtual machine methods and types from Java.