2018-10-08 13:34:43 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								title: Identity matrix
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								id: 5a23c84252665b21eecc7eb1
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								challengeType: 5
							 
						 
					
						
							
								
									
										
										
										
											2018-10-10 16:20:40 -04:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								videoUrl: ''
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								localeTitle: Matriz de identidad
							 
						 
					
						
							
								
									
										
										
										
											2018-10-08 13:34:43 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Description
  
						 
					
						
							
								
									
										
										
										
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								< section  id = "description" >  Una < i > matriz de identidad</ i >  es una matriz cuadrada de tamaño \ (n \ tiempos n \), donde los elementos diagonales son todos < b > 1</ b >  s (unos), y todos los demás elementos son todos < b > 0</ b >  s (ceros). \ begin {bmatrix} 1 &  0 &  0 \ cr 0 &  1 &  0 \ cr 0 &  0 &  1 \ cr \ end {bmatrix} Escriba una función que tome un número & #39 ; n& #39 ;  como parámetro y devuelva la matriz de identidad de orden nx n. </ section >  
						 
					
						
							
								
									
										
										
										
											2018-10-08 13:34:43 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Instructions
  
						 
					
						
							
								
									
										
										
										
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								< section  id = "instructions" >  
						 
					
						
							
								
									
										
										
										
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								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Tests
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'tests' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```yml
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								tests:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  -  text: < code > idMatrix</ code >  debería ser una función.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								    testString: 'assert(typeof idMatrix=="function","< code > idMatrix< / code >  should be a function.");'
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  -  text: < code > idMatrix(1)</ code >  debería devolver una matriz.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								    testString: 'assert(Array.isArray(idMatrix(1)),"< code > idMatrix(1)< / code >  should return an array.");'
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: '< code > idMatrix(1)</ code >  debe devolver < code > " +JSON.stringify(results[0])+" </ code >  .'
							 
						 
					
						
							
								
									
										
										
										
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								    testString: 'assert.deepEqual(idMatrix(1),results[0],"< code > idMatrix(1)< / code >  should return < code > "+JSON.stringify(results[0])+"< / code > .");'
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: '< code > idMatrix(2)</ code >  debe devolver < code > " +JSON.stringify(results[1])+" </ code >  .'
							 
						 
					
						
							
								
									
										
										
										
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								    testString: 'assert.deepEqual(idMatrix(2),results[1],"< code > idMatrix(2)< / code >  should return < code > "+JSON.stringify(results[1])+"< / code > .");'
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: '< code > idMatrix(3)</ code >  debe devolver < code > " +JSON.stringify(results[2])+" </ code >  .'
							 
						 
					
						
							
								
									
										
										
										
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								    testString: 'assert.deepEqual(idMatrix(3),results[2],"< code > idMatrix(3)< / code >  should return < code > "+JSON.stringify(results[2])+"< / code > .");'
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: '< code > idMatrix(4)</ code >  debe devolver < code > " +JSON.stringify(results[3])+" </ code >  .'
							 
						 
					
						
							
								
									
										
										
										
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								    testString: 'assert.deepEqual(idMatrix(4),results[3],"< code > idMatrix(4)< / code >  should return < code > "+JSON.stringify(results[3])+"< / code > .");'
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Challenge Seed
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'challengeSeed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-seed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function idMatrix (n) {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  // Good luck!
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								### After Test
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-teardown' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								console.info('after the test');
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Solution
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'solution' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
									
										
										
										
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								// solution required
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >