Upload files to "arrays"

arrays/Example1.js

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+
+// creating an array of strings
+let animals = ["Zebra", "Koala", "Lion", "Elephan", "Eagle"]
+
+// displaying the items stored in array animals
+console.log(animals)
+
+console.log("\narray contains "+ animals.length  +" items")

arrays/Example2.js

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+
+
+
+
+// creating an array of strings
+let animals = ["Zebra", "Koala", "Lion", "Elephan", "Eagle"]
+
+// displaying the items stored in array animals using a for loop
+for(let i=0; i<animals.length; i++)
+{
+    let item = animals[i] // gets item at location i
+    console.log('Item ' +i +": " +item)
+}
+
+console.log()
+// displaying the items using the for-in loop
+for(let i in animals)
+{
+    let item = animals[i] // gets item at location i
+    console.log('Item ' +i +": " +item)
+}
+
+

arrays/Example3.js

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+// METHODS OF ARRAYS
+/*
+  push(elem_list): Adds one or more elements to the end of the array, 
+                   and returns the new length of the array. 
+
+            pop(): removes the last element in the array, decrements the length,
+                   and the element that it removed
+                 
+unshift(elem_list): adds one or more elements to the beginning of the
+                    array and returns the new length of the array
+
+           shift(): Removes the first element in the array, decrements the 
+                    array length, and returns the element that it removed
+
+  join(seperator): when no parameter is passed, this method converts all the elements
+                   of the array to strings and concatenates them seperated 
+                   by commas. To change the seperator, you can pass this method 
+                   a string literal
+
+      toString():  Same as the join method without any parameter passed to it. 
+*/
+
+// creating an array of strings
+console.log("Original Array")
+let animals = ["Zebra", "Koala", "Lion", "Elephan", "Eagle"]
+console.log(animals)
+console.log()
+
+console.log("Inserting Monkey and Snake at end of array")
+animals.push("Monkey", "Snake");
+console.log(animals)
+console.log()
+
+console.log("Removing last element of array")
+animals.pop()
+console.log(animals)
+console.log()
+
+console.log("Inserting Spider and horse at front of array")
+animals.unshift("Spider", "horse")
+console.log(animals)
+console.log()
+
+console.log("Removing first item from array")
+animals.shift()
+console.log(animals)
+console.log()
+
+console.log("Joining array elements in a single string")
+let s = animals.join(" ")
+console.log(s)
+console.log()
+
+// combining array seaanimals and animals into one array named allanimals
+console.log("combining array seaanimals and animals into one array named allanimals")
+let seaAnimals = ["Shark", "Whale", "Dolphin"]
+let allanimals = seaAnimals.concat(animals)
+console.log(allanimals)
+console.log()

arrays/Example4.js

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+// METHODS OF ARRAYS
+/*
+  push(elem_list): Adds one or more elements to the end of the array, 
+                   and returns the new length of the array. 
+*/
+let getSum = function(list)
+{
+    let sum=0
+    for(let i in list)
+    {
+        let n = list[i]
+        sum = sum + n
+    }
+    return sum;
+}
+
+
+let getAverage = function(list)
+{
+    let sum = getSum(list);
+    let ave = sum/list.length
+    return ave
+}
+
+let numbers = [2, 6, 4, 7, 3, 6]
+console.log("Array: " +numbers)
+let sum = getSum(numbers)
+let average = getAverage(numbers)
+
+console.log("Sum = " +sum  )
+console.log("Average = " +average)
+

arrays/Example5.js

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+// METHODS OF ARRAYS
+/*
+  push(elem_list): Adds one or more elements to the end of the array, 
+                   and returns the new length of the array. 
+*/
+let getSum = function(list)
+{
+    let sum=0
+    for(let i in list)
+    {
+        let n = list[i]
+        sum = sum + n
+    }
+    return sum;
+}
+
+let numbers = [2, 6, 4, 7, 3, 6]
+
+let min = Math.min.apply(null, numbers)
+let max = Math.max.apply(null, numbers)
+
+console.log("Min = " +min)
+console.log("Max = " +max)
+