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#A little example of how manipulate matrix with threads in C

• compile:

$ gcc -pthread squareMatrixItemsWithThreads.c -o squareMatrixItemsWithThreads

• run

$ ./squareMatrixItemsWithThreads

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// TODO test if works
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    int[][] states = new int[][] { new int[] { android.R.attr.state_pressed } };
    int[] colors = new int[] { color };
    ColorStateList colorStateList = new ColorStateList(states, colors);
    RippleDrawable rippleDrawable = new RippleDrawable(colorStateList, null, null);
    view.setBackground(rippleDrawable);
}

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// Using Lambdas on Kotlin

val items = ArrayList<String>()
items.sortBy { item -> 
 item.length() 
}
//or more implicity
items.sortBy { it.length() }

//------------------------------------------------------------------------------

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// Using Nullables on Kotlin

var nothing = null
var stringNullable: String? = null

//------------------------------------------------------------------------------

// Using Nullables in Java 7

String alwaysCanBeNull = null

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// Using Class Fields on Kotlin

public class Foo(var variable: String, val value: String, val withDefault: String = "o") {
}

// And use it on Kotlin
Foo("f", "o", "o")
Foo("f", "o")

//------------------------------------------------------------------------------

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// Using Variables on Kotlin

var foo = "mutable foo"
val finalFoo = "final foo"
val explicitFoo: String = "explicit foo"

//------------------------------------------------------------------------------

// Using Variables in Java 7

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// Using Singleton on Kotlin
public object MySingleton {
  
  public fun foo() {
  }
  
}

// And use it on Kotlin
MySingleton.foo()

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// Using Closure on Kotlin
button.setOnClickListener { 
  Thread { 
    // Amazing! Just 2 identations, 5 lines and 55 characters "lesser than a half of tweet"
  }.start() 
}

//------------------------------------------------------------------------------

// Using the nearest from Closure in Java 7

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// Using Lazy on Kotlin
private val foo by Delegates.lazy { Foo(getContext()) }

//------------------------------------------------------------------------------

// Using the nearest from Lazy in Java 7
private Foo mFoo;

public Foo getFoo() {
  if (mFoo == null) {

ademar111190

#!/usr/bin/env python

from time import time

'''
	Verify if 0 + 1 + 2 + ... + n is equals to (n * (n + 1)) / 2, this 
	method is not using mathematical induction, it is using exhaustion
'''
def proof(n):
	for i in range(n + 1):