Done day 7 Exercises

07_Day_Functions/07_day_starter/scripts/main.js

@@ -1,2 +1,300 @@
 console.log(countries)
-alert('Open the console and check if the countries has been loaded')
+// alert('Open the console and check if the countries has been loaded')
+                                    // Day 7 exercises
+// Exercise 1 & 2
+const fullName = (firstName, secondName) => {
+    return `My full name is ${firstName} ${secondName}`
+};
+
+const name = fullName('Gideon', 'Buba')
+console.log(name);
+
+// Exercise 3
+function addNum(x, y) {
+    let sum = x + y;
+    return sum;
+}
+
+console.log(addNum(20, 20))
+
+// Exercise 4
+
+function areaOfRectangle(length, width) {
+    const rectangleArea = length * width;
+    return rectangleArea;
+}
+
+console.log(areaOfRectangle(50, 30)) 
+
+// Exercise 5
+function perimeterOfRectangle(length, width) {
+    let perimeter = 2 * (length + width)
+    return perimeter
+}
+
+console.log(perimeterOfRectangle(50, 30))
+
+// Exercise 6
+function volumeOfRectPrism(length, width, height) {
+    let volume = length * width * height;
+    return volume;
+}
+
+console.log(volumeOfRectPrism(70, 30, 40))
+
+// Exercise 7
+function areaOfCircle(r) {
+    let π = Math.PI;
+    let area  = π * r * r;
+    return area;
+}
+
+console.log(areaOfCircle(30))
+
+// Exercise 8
+function circumOfCircle(r) {
+    let π = Math.PI;
+    let circumference = 2*π*r ;
+    return circumference
+}
+
+console.log(circumOfCircle(10))
+
+// Exercise 9
+function calculateDensity(mass, volume) {
+    let density = mass / volume;
+    return density;
+}
+
+console.log(calculateDensity(20, 30))
+
+// Exercise 10
+function calculateSpeed (distance, time) {
+    let speed = distance / time;
+    return speed;
+}
+
+console.log(calculateSpeed(50, 60))
+
+// Exercise 11
+function calculateWeight  (mass) {
+    const gravity = 9.8
+    const weight = mass * gravity;
+    return weight;
+}
+
+console.log(calculateWeight(60))
+
+// Exercise 12
+function convertCelsiusToFahrenheit (celcius) {
+    let conversion = (celcius * 9 / 5) + 32;
+    return conversion;
+}
+
+console.log(convertCelsiusToFahrenheit(50))
+
+// Exercise 13
+function bmi (weightInKg, heightInMeterSquare) {
+    let findBmi = weightInKg / (heightInMeterSquare * heightInMeterSquare);
+
+    if (findBmi < 18.5) {
+        return 'You are underweight'
+    } else if (findBmi >= 18.8 && findBmi < 24.9) {
+        return "Your BMI is normal"
+    } else if (findBmi === 25 && findBmi < 29.9) {
+        return `You have a slightly overweight`
+    } else if (findBmi >= 30) {
+        return `You are obese`;
+    } else {
+        return 'Invalid Input'
+    }
+}
+
+console.log(bmi(72, 1.83))
+
+// Exercise 14
+function checkSeason(month) {
+    const autumn =  ['september', 'october', 'november']
+    const winter = ['december', 'january', 'february']
+    const spring = ['march', 'april', 'may']
+    const summer = ['june', 'july', 'august']
+
+    const lowerCaseMonth = month.toLowerCase();
+
+    if (autumn.includes(lowerCaseMonth)) {
+        return `${month} is autumn`
+    } else if (winter.includes(lowerCaseMonth)) {
+        return `${month} is winter`
+    } else if (spring.includes(lowerCaseMonth)) {
+        return `${month} is spring`
+    } else if (summer.includes(lowerCaseMonth)) {
+        return `${month} is summer`
+    } else {
+        return 'Invalid Input'
+    }
+}
+
+console.log(checkSeason('JuNe'))
+
+// Exercise 15
+function largestArgument (x, y, z) {
+    let highestValue = Math.max(x, y, z)
+    return highestValue;
+}
+
+console.log(largestArgument(10, 7, 19))
+
+
+                                    // Day 7 exercises Level 2
+
+// Exercise 1
+function solveLinEquation(a, b, c, x, y) {
+    const linearEquation = a * x + b * y + c;
+    return linearEquation;
+}
+
+const result = solveLinEquation(2, 3, 4, 5, 6);
+console.log(result); // Example input: a = 2, b = 3, c = 4, x = 5, y = 6
+
+// Exercise 2
+function solveQuadratic(a, b, c) {
+    if (a === undefined) {
+        return { 0: 0 };
+    }
+
+    const discriminant = b ** 2 - 4 * a * c;
+
+    if (discriminant > 0) {
+        const x1 = (-b + Math.sqrt(discriminant)) / (2 * a);
+        const x2 = (-b - Math.sqrt(discriminant)) / (2 * a);
+        return { x1, x2 };
+    } else if (discriminant === 0) {
+        const x = -b / (2 * a);
+        return { x };
+    } else {
+        return {};
+    }
+}
+
+console.log(solveQuadratic()); // {0}
+console.log(solveQuadratic(1, 4, 4)); // {-2}
+console.log(solveQuadratic(1, -1, -2)); // {2, -1}
+console.log(solveQuadratic(1, 7, 12)); // {-3, -4}
+console.log(solveQuadratic(1, 0, -4)); // {2, -2}
+console.log(solveQuadratic(1, -1, 0)); // {1, 0}
+
+// Exercise 3
+function printArray(arr) {
+    for (let i = 0; i < arr.length; i++) {
+        console.log(arr[i]);
+    }
+}
+
+const myArray = [1, 2, 3, 4, 5];
+printArray(myArray); 
+
+// Exercise 4
+function showDateTime () {
+    let date = new Date();
+
+    let day = date.getDate();
+    let month = date.getMonth() + 1;
+    let year = date.getFullYear();
+
+    return `${day}/${month}/${year}`;
+}
+
+showDateTime()
+
+//  Exercise 5
+function swapValues(x, y) {
+    let temp = x;
+    x = y;
+    y = temp;
+    
+    return { x, y };
+}
+
+console.log(swapValues(3, 4)); 
+console.log(swapValues(4, 5)); 
+
+// Exercise 6
+function reverseArray(arr) {
+    let reversed = [];
+    for (let i = arr.length - 1; i >= 0; i--) {
+        reversed.push(arr[i]);
+    }
+    return reversed;
+}
+
+console.log(reverseArray([1, 2, 3, 4, 5])); // Output: [5, 4, 3, 2, 1]
+console.log(reverseArray(['A', 'B', 'C'])); // Output: ['C', 'B', 'A']
+
+// Exercise 7
+function capitalizeArray(arr) {
+    let upperCase = [];
+    for (let i = 0; i < arr.length; i++) {
+        let capitalizeElement = arr[i].toUpperCase();
+        upperCase.push(capitalizeElement);
+    }
+
+    return upperCase;
+}
+
+console.log(capitalizeArray(['a', 'b', 'c', 'd']))
+
+// Exercise 8
+function addItem(item) {
+    let itemArr = []; 
+    itemArr.push(item); 
+    return itemArr; 
+}
+
+console.log(addItem('Egusi')); // Output: ['Egusi']
+
+// Exercise 9
+function removeItem(arr, index) {
+    if (index >= 0 && index < arr.length) {
+        arr.splice(index, 1);
+    }
+    return arr;
+}
+
+const originalArray = ['apple', 'banana', 'cherry', 'date'];
+const modifiedArray = removeItem(originalArray, 1);
+
+console.log(modifiedArray); 
+
+// Exercise 10
+function sumOfNumbers (x, y) {
+    let sum = 0;
+
+    if (x < y) {
+        for (let i = x; i <= y; i++) {
+            sum += i;
+        }
+    }
+
+    return sum
+}
+
+console.log(sumOfNumbers(1, 5))
+
+// Exercise 11
+function sumOfOdds (x, y) {
+    let sum = 0;
+
+    if (x % 2 === 0 || y % 2 === 0) {
+        for (let i = x; i <= y; i++) {
+            sum += i;
+        }
+        return sum;
+    }
+}
+
+console.log(sumOfOdds)
+
+
+
+
+