2019-01-29 19:43:12 +03:00 
										
									 
								 
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								# Slice Exercises
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								## Exercises Level I - Basics — Warm-Up
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								Let's reinforce your basic knowledge of slices.
							 
						 
					
						
							
								
									
										
										
										
											2019-01-29 19:56:18 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-01-29 19:43:12 +03:00 
										
									 
								 
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								1.  ** [Declare nil slices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/01-declare-nil )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								2.  ** [Assign empty slices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/02-empty )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								3.  ** [Assign slice literals ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/03-slice-literal )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								4.  ** [Declare the arrays as slices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/04-declare-arrays-as-slices )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								5.  ** [Fix the Problems ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/05-fix-the-problems )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								6.  ** [Compare the slices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/06-compare-the-slices )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								## Exercises Level II - Appending
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								Discover the power of the append function.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-01-29 19:43:12 +03:00 
										
									 
								 
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								1.  ** [Append #1 — Append and compare byte slices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/07-append )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
										 
							
							
								2.  ** [Append #2 —   ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/08-append-2 )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-01-30 16:47:30 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								3.  ** [Append #3 — Fix the problems ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/09-append-3-fix )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								4.  ** [Append and Sort Numbers ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/10-append-sort-nums )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								5.  ** [Housing Prices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/11-housing-prices )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								6.  ** [Housing Prices and Averages ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/12-housing-prices-averages )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								## Exercises Level III - Slicing
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								Discover the power of slicing.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-01-30 16:47:30 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								1.  ** [Slice the numbers ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/13-slicing-basics )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								2.  ** [Slicing by arguments ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/14-slicing-by-args )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-02-08 13:10:55 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								3.  ** [Slicing the Housing Prices ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/15-slicing-housing-prices )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								## Exercises Level IV - Internals
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								Peek into the internals of the slices and gain more insight. This is necessary for complete command of the slices.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-02-08 13:10:55 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								1.  ** [Fix the backing array problems ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/16-internals-backing-array-fix )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								2.  ** [Sort the backing array ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/17-internals-backing-array-sort )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								3.  ** [Observe the memory allocations ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/18-internals-slice-header )** 
						 
					
						
							
								
									
										
										
										
											2019-03-04 20:30:18 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								4.  ** [Observe the length and capacity ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/19-observe-len-cap )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								5.  ** [Observe the capacity growth ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/20-observe-the-cap-growth )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								6.  ** [Correct the lyric ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/21-correct-the-lyric )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								## Exercises Level V - Advanced Operations
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								Commonly used and more advanced operations are available to slices. Now, it's time to test yourself and fix some common problems.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-06 01:26:13 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								★ WARNING ★
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								Please update your local copy of the prettyslice package for some examples to work. [Please find the intructions how to do so here ](../README.md ).
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								1.  ** [Practice Advanced Slice Operations ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/22-adv-ops-practice )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								    Let's warm you up for the advanced slice operations, and reinforce your neurons.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								2.  ** [Limit the backing array sharing ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/23-limit-the-backing-array-sharing )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								    Your API does not control the slices that it share with the outside world. You need to fix it.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:49:54 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								3.  ** [Fix the Memory Leak ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/24-fix-the-memory-leak )** 
						 
					
						
							
								
									
										
										
										
											2019-03-05 23:32:32 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								    A slice retrieved from an API causes a memory leak in your program. You need to fix it.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								4.  ** [Add newlines to the lyric sentences ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/25-add-lines )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								    Use the power of the `copy()`  function and add newlines into a new buffer from a string slice. This exercise is more tricky than you might think.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								5.  ** [Print Daily Requests ](https://github.com/inancgumus/learngo/tree/master/16-slices/exercises/26-print-daily-requests )** 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
								
									
								 
							
							
								    Group the requests log into a multi-dimensional from a single-dimensional slice. Allocate a slice with the exact size needed by doing some wizardary calculations. And lastly, pretty print the result.