Js exercises bhavana

src/exercises/1/exercise.js

@@ -3,7 +3,8 @@
 //  - Fix the issue.
 
 function printOneToTen() {
-  for (const number = 1; number <= 10; number++) {
+  for (let number = 1; number <= 10; number++) {
     console.log(`\n${number}`);
   }
 }
+printOneToTen();

src/exercises/10/exercise.js

@@ -3,16 +3,23 @@
 // - Do not use loops
 
 // Example of inputArray
-/*
-	[
-		{
-			name:"Ravi",
-			age:28
-		},
-		{
-			name:"Teja",
-			age:28
-		}
-	]
-*/
-function findVoteEligibleCandidates(populationList) {}
+
+const voters = [
+  {
+    name: "Ravi",
+    age: 28,
+  },
+  {
+    name: "Teja",
+    age: 8,
+  },
+];
+
+function findVoteEligibleCandidates(populationList) {
+  //   const eligibleVoters = populationList.filter(function (person) {
+  //     return person.age > 18;
+  //   });
+  const eligibleVoters = populationList.filter((person) => person.age > 18);
+  console.log(eligibleVoters);
+}
+findVoteEligibleCandidates(voters);

src/exercises/2/exercise.js

@@ -3,11 +3,15 @@
 //  - Fix the issue.
 
 function divideTenByNumber(number) {
+  let result;
   if (number != 0) {
-    let result = 10 / number;
+    result = 10 / number;
   } else {
-    let result = "Indeterminate";
+    result = "Indeterminate";
   }
 
   console.log(`Result after dividing 10 by ${number} is ${result}`);
 }
+divideTenByNumber(3);
+
+//result is defined but it is not in the scope of the function it is the scope of the if else block

src/exercises/3/exercise.js

@@ -5,10 +5,15 @@ function checkIfArray(input) {
   let isInputAnArray = false;
 
   //...
-
-  if (isInputAnArray) {
-    console.log("Given input is an Array");
-  } else {
-    console.log("Given input is not an Array");
-  }
+  isInputAnArray = Array.isArray(input);
+  isInputAnArray
+    ? console.log("Given input is an Array")
+    : console.log("Given input is not an Array");
+  //used conditional operator
+  // if (isInputAnArray) {
+  //   console.log("Given input is an Array");
+  // } else {
+  //   console.log("Given input is not an Array");
+  // }
 }
+checkIfArray([1, 2, 3, 4, 5, 6]);

src/exercises/4/exercise.js

@@ -4,6 +4,10 @@
 
 function greeting(firstName, lastName) {
   let welcomeGreeting;
+  welcomeGreeting = `${firstName} ${lastName}`;
 
   console.log(welcomeGreeting);
 }
+greeting("Bhavana", "Kondeti");
+
+// template literal can be used to used to dispaly the variable values in the text

src/exercises/5/exercise.js

@@ -3,8 +3,11 @@
 // - Comment the function that you used.
 
 function binaryToDecimal(binaryString) {
-  let decimalValue;
+  let decimalValue = parseInt(binaryString, 2);
   console.log(
     `Decimal for the given binary string ${binaryString} is ${decimalValue}`
   );
 }
+binaryToDecimal("1100");
+//used parseInt with the radix set to 2 ;
+//parseInt(binaryString, 2);

src/exercises/6/exercise.js

@@ -1,7 +1,8 @@
 // Complete the below function. Find the length of the given array.
 // - Also validate the input. Accept the input only if its an array.
-
 function findTheLength(inputArray) {
-  let lengthOfArray;
+  let lengthOfArray = inputArray.length;
   console.log(`Length of the given input array is ${lengthOfArray}`);
 }
+let inputArray = [1, 2, 3, 4, 5];
+Array.isArray(inputArray) && findTheLength(inputArray);

src/exercises/7/exercise.js

@@ -2,6 +2,10 @@
 // - Use Array methods
 
 function commaSeparatedString(inputArray) {
+  //using  join function for this
+  let joinedString = inputArray.join(",");
+  console.log(joinedString);
   // Given an Array like ["firstName","lastName"]
   // Return a comma separated String like "firstName,lastName"
 }
+commaSeparatedString(["hello", "Bhavana", "kondeti"]);

src/exercises/8/exercise.js

@@ -1,4 +1,8 @@
 // Complete the below function.
 // - Print the given Array
 
-function printArray(inputArray) {}
+function printArray(inputArray) {
+  console.log(inputArray);
+}
+
+printArray([1, 2, 3, 4]);

src/exercises/9/exercise.js

@@ -2,6 +2,15 @@
 // - Use Array methods.
 // - Do not use loops
 
+//Here we will be using map method which it returns an new array with modified elemts in the result array
+//map method is simialr to forEach where forEach will not return any array as a result
 function multiplyArrayByTwo(inputArray) {
+  // inputArray = inputArray.map(function (value) {
+  //   return value * 2;
+  // });
+
+  //using array function in the map methods
+  inputArray = inputArray.map((value) => value * 2);
   console.log(`Given input array is ${inputArray}`);
 }
+multiplyArrayByTwo([1, 2, 34, 4]);