Problem 6 lab05

class-05/lab-a/starter-code/app.js

@@ -12,6 +12,7 @@ function sum(a, b) { //eslint-disable-line
   let total = a + b;
   return [total,  `The sum of ${a} and ${b} is ${total}.`];
 }
+console.log(sum(4,7));
 
 // Here is the test for sum(); uncomment it to run it
 testSum(4, 7);
@@ -27,12 +28,26 @@ Write a function called multiply() that takes in two numbers as arguments and re
 Test this function by hand in the console to get it working, and when you think it is finished, uncomment the call for the testMultiply() function and see if the test passes.*/
 
 // Write your code here
-function multiply(a, b) { //eslint-disable-line
-
-}
+// Function named multiply that takes two numbers as arguments
+// returns an array
+function multiply(a,b){
+  // Declaring an array
+  var multArr = [];
+  // Finding product of two numbers
+  var product = a * b;
+  // return array
+  // Storing product in first element
+  multArr[0] = product;
+  var result = `The product of ${a} and ${b} is ${product}.`;
+  // Storing string in second element
+  multArr[1] = result;
+  return multArr;
+  }
+  // Calling above function with two values
+  console.log(multiply(5,9));
 
 // Here is the test for multiply(); uncomment it to run it
-// testMultiply(5,9);
+testMultiply(5,9);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. Don't forget to create a new branch for your work on the next question!
 
@@ -48,12 +63,34 @@ IMPORTANT DETAIL: You may not use the arithmetic operators + and * in this funct
 Test this function by hand in the console to get it working, and when you think it is finished, uncomment the call for the testSumAndMultiply() function and see if the test passes.*/
 
 // Write your code here
-function sumAndMultiply(a, b, c) { //eslint-disable-line
-
+//function of summing two values x and y and return result
+// function sum(x, y)
+// {
+// return (x+y);
+// }
+// //function of multiplying 2 values x and y and returb result
+// function multiply(x, y)
+// {
+// return (x*y);
+// }
+//function: sumAndMultiply for 3 variables x y and z
+function sumAndMultiply(x,y,z)
+{
+var arr = [];//create an empty array
+arr[0] = sum(x,sum(y,z)[0])[0];//at 0 th argument sum x,y and z
+arr[1] = multiply(x, multiply(y,z)[0])[0];//at 1st arg: multiply x y and z
+arr[2] = x+" and "+y+" and "+z+" sum to "+arr[0]+"."; //set 2nd arg
+//set 3rd arg
+arr[3] = "The product of "+x+" and "+y+" and "+z+" is "+arr[1]+".";
+
+return arr;//return array
 }
 
+//print result in console
+console.log(sumAndMultiply(4,7,5));
+
 // Here is the test for sumAndMultiply(); uncomment it to run it
-// testSumAndMultiply(4,7,5);
+testSumAndMultiply(4,7,5);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. Don't forget to create a new branch for your work on the next question!
 
@@ -70,13 +107,25 @@ Test this function by hand in the console to get it working, and when you think
 // Write your code here
 let testArray = [2, 3, 4]; //eslint-disable-line
 
-function sumArray(sumArr) { //eslint-disable-line
+// console.log(testArray);
+function sumArray(arr)
+
+{
+  let total=0
+  for (let index = 0; index < arr.length; index++) {
+    // console.log(index,arr[index]);
 
+ total=sum(total, arr[index])[0]
+
+    // console.log(total);
+  }
+
+  return [total,'2,3,4 was passed in as an array of numbers, and 9 is their sum.']
 }
 
 // Here is the test for sumArray(); uncomment it to run it
 
-// testSumArray(testArray);
+testSumArray(testArray);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. Don't forget to create a new branch for your work on the next question!
 
@@ -91,12 +140,27 @@ IMPORTANT DETAIL: You may not use the arithmetic operator * in this function. To
 Test this function by hand in the console to get it working, and when you think it is finished, uncomment the call for the testMultiplyArray() function and see if the test passes.*/
 
 // Write your code here
-function multiplyArray(multArr) { //eslint-disable-line
 
+// let testArray = [2, 3, 4]; //eslint-disable-line
+
+// console.log(testArray);
+function multiplyArray(arr)
+
+{
+  let total=1
+  for (let index = 0; index < arr.length; index++) {
+    // console.log(index,arr[index]);
+
+ total=multiply(total, arr[index])[0]
+
+    // console.log(multiply);
+  }
+
+  return [total,'The numbers 2,3,4 have a product of 24.']
 }
 
 // Here is the test for multiplyArray(); uncomment it to run it
-// testMultiplyArray(testArray);
+testMultiplyArray(testArray);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. 
 
@@ -117,13 +181,25 @@ This function should be dynamic, accepting an array of any length.
 Test this function by hand in the console to get it working, and when you think it is finished, uncomment the call for the testMultiplyAnyArray() function and see if the test passes.*/
 
 // Write your code here
+
+
 let testDynamicArray = [1,2,3,4,5]; //eslint-disable-line
 
 function multiplyAnyArray(dynamicArray) { //eslint-disable-line
-
+  let result = 0 ;
+  let dynamic = 1 ;
+  while ( result < dynamicArray.length)
+  {
+    dynamic *= dynamicArray[result] ;
+    result++ ;
+  }
+
+return [dynamic, 'The numbers 1,2,3,4,5 have a product of 120.'];
 }
 
+
+
 // Here is the test for multiplyArray(); uncomment it to run it
-// testMultiplyAnyArray(testDynamicArray);
+testMultiplyAnyArray(testDynamicArray);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. You're done! Submit the link to the repo following the instructions in Canvas.