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Author: copev313

Diff for: arrays.js

@@ -0,0 +1,42 @@
+//DATA STRUCTURES: ARRAYS//
+
+/////////////////////////////////////////////////////////////////////
+
+const myArray = [];                 //shorthand version
+const anotherArray = new Array();
+
+const tenArray = new Array (10);   //specifies the size to be 10
+
+//method for filling an array with values
+let anArray = new Array(5);
+let val = 1;
+for (const [index, element] of anArray.entries()) {
+  anArray[index] = val++;
+}
+
+console.log(anArray);
+
+//reference elements in an array
+console.log(anArray[3]);
+console.log(anArray[1+3]);
+
+//////////////////////////////////////////////////////////////////
+
+//ARRAY METHODS//
+
+let a = [0, 1, 2];
+
+let len = a.length;   //returns the length of the array
+console.log('length:', len);
+
+a.push(8);            //adds elements to the end of array
+console.log('push()', a);
+
+a.splice(3, 0, 'cha cha cha');    //adds an element to index:3 
+console.log('splice()', a);
+
+a.pop();              //removes an item from the end of the array
+console.log('pop()', a);
+
+a.shift();            //removes an item from the beginning of the array
+console.log('shift()', a);