day-7 partially completed

solutions/day-5/Countries level2.js

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+export default Countries = [
+  'Albania',
+  'Bolivia',
+  'Canada',
+  'Denmark',
+  'Ethiopia',
+  'Finland',
+  'Germany',
+  'Hungary',
+  'Ireland',
+  'Japan',
+  'Kenya'
+]
+

solutions/day-5/level1.js

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+// 1.question
+let emt = [];
+// 2.question
+let five = [1, 2, 3, 4, 5];
+// 3.question
+console.log(five.length);
+// 4.question
+let f = 0, l = five.length - 1, mid = (f + l) / 2;
+console.log(five[f], five[l], five[mid]);
+// 5.question
+let mixedDataTypes = [
+     1,
+     'satya',
+     false,
+     20,
+     null
+];
+// 6.question
+let itCompanies = [
+     'Facebook',
+     'Google',
+     'Microsoft',
+     'Apple',
+     'IBM',
+     'Oracle',
+     'Amazon'
+];
+// 7.question
+console.log(itCompanies);
+// 8.question
+console.log(itCompanies.length);
+// 9.question
+l = itCompanies.length - 1;
+console.log(itCompanies[f], itCompanies[l], itCompanies[mid]);
+// 10.question
+itCompanies.forEach((company) => console.log(company));
+// 11.question
+itCompanies.forEach((company) => console.log(company.toUpperCase()));
+// 12.question
+console.log(itCompanies.toString());
+// 13.question
+(itCompanies.includes('Facebook')) ? console.log(itCompanies[itCompanies.indexOf('Facebook')]) : console.log('Not found');;
+// 14.question
+// itCompanies.map((c) => {
+//      let count = 0;
+//      let i = c.split(',');
+//      i.map((e) => {
+//           console.log(e);
+//           if (e.split(',') == 'o') { count++; }
+//      })
+//      if (count > 1) {
+//           // console.log(c);
+//      }
+//      // console.log(c);
+// });
+// 15.question
+itCompanies.sort();
+// 16.question
+itCompanies.reverse();
+// 17.question
+itCompanies.slice(0, 2);
+// 18.question
+itCompanies.slice(l - 4, l - 1);
+// 19.question
+itCompanies.slice(mid, mid + 1);
+// 20.question
+itCompanies.shift();
+// 21.question
+itCompanies.splice(mid, 1, 0);
+// 22.question
+itCompanies.pop();
+// 23.question
+itCompanies.slice(0);

solutions/day-5/main level2.js

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+import web_techs from "./web_techs";
+
+console.log(web_techs);

solutions/day-5/tempCodeRunnerFile.js

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+console.log(i)

solutions/day-5/web_techs.js

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+export default [
+  'HTML',
+  'CSS',
+  'JavaScript',
+  'React',
+  'Redux',
+  'Node',
+  'MongoDB'
+]

solutions/day-7/level1.js

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+// 1.question
+function fullName() {
+     console.log(`Satya surendra`);
+}
+fullName();
+// 2.question
+function fullName(fullName,lastName) {
+     return fullName + ' ' + lastName;
+}
+console.log(fullName('satya', 'surendra'));
+
+// 3.question
+function addNumbers(a, b) {
+     return a + b;
+}
+console.log(addNumbers(1, 2));
+// 4.question
+function areaOfRectangle(l,b) {
+     return l * b;
+}
+// 5.question
+function perimeterOfRectangle(l, b) {
+     return 2(l + b);
+}
+// 6.question
+function volumeOfRectPrism(l, b, h) {
+     return l * b * h;
+}
+// 7.question
+function areaOfCircle(r) {
+     return 3.14 * r * r;
+}
+// 8.question
+function circumOfCircle(r) {
+     return 2 * 3.14 * r;
+}
+// 9.question
+function density(mass, volume) {
+     return mass / volume;
+}
+// 10.question
+function speed(d, t) {
+     return d / t;
+}
+// 11.question
+function weight(mass,gravity) {
+     return mass * gravity;
+}
+// 12.question
+function convertCelsiusToFahrenheit(c) {
+     return (c * 9 / 5) + 32;
+}
+// 13.question
+function IBM(weight, height) {
+     let ibm = weight / Math.pow(height, 2);
+     if (ibm < 18.5) {
+          console.log('Underweight');
+     } else if (ibm >= 18.5 && ibm < 24.9) {
+          console.log('Normal weight');
+     } else if (ibm >= 25 && ibm < 29.9) {
+          console.log('Overweight');
+     } else {
+          console.log(`Obese`);
+     }
+}
+// 14.question
+
+// 15.question
+function findMax(a, b, c) {
+     return Math.max(a, b, c);
+}

solutions/day-7/level2.js

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+// 1.question
+function solveLinEquation(a, b, c) {
+     return -a / b;
+}
+// 2.question
+// function solveQuadratic(a,b,c) {
+//      return Math.sqrt(-b + 4 * a * c) / 2*a;
+// }
+// // console.log(solveQuadratic()) // {0}
+// console.log(solveQuadratic(1, 4, 4)) // {-2}
+// console.log(solveQuadratic(1, -1, -2)) // {2, -1}
+// console.log(solveQuadratic(1, 7, 12)) // {-3, -4}
+// console.log(solveQuadratic(1, 0, -4)) //{2, -2}
+// console.log(solveQuadratic(1, -1, 0)) //{1, 0}
+// 3.question
+function printArray(arr) {
+     for (let i = 0; i < arr.length; i++){
+          console.log(arr[i]);
+     }
+}
+printArray([1, 2, 3, 4, 5]);
+// 4.question
+function showDateTime() {
+     let now = new Date();
+     let day = now.getDate(),
+          mon = now.getMonth(),
+          year = now.getFullYear(),
+          hrs = now.getHours(),
+          min = now.getMinutes();
+     console.log(`${day}/${mon}/${year} ${hrs}:${min}`);
+}
+// 5.question
+function swap(a, b) {
+     let t;
+     t = a;
+     a = b;
+     b = t;
+     console.log(a,b); 
+}
+swap(1, 2)
+// 6.question
+function reverseArray(arr) {
+     let rev = [];
+     for (let i = arr.length; i >= 0; i--){
+          rev.push(arr[i]);
+     }
+     return rev;
+}
+// 7.question

solutions/day-7/tempCodeRunnerFile.js

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+solveQuadratic