done teacher

exercise.js

@@ -1,2 +1,88 @@
 // Good Luck! You got this 💪🏾
 // Write your code here.
+
+
+
+// 1. Write a function called 'describeCountry' which takes three parameters: `country`,`population` and `capitalCity`. Based on this input, the function returns a string with this format: _'Somaliland has 3.5 million people and its captial city is Hargeisa'_
+
+function describeCountry(country,population,capitalCity){
+    return (` ${country} has ${population} million people and its capital city is ${capitalCity}`)
+
+}
+console.log(describeCountry("Somaliland","3.5","Hargeisa"))
+
+// 2. Call the function 3 times with input data for 3 different countries. store the return values in 3 different variables and log them to the console.
+
+console.log(describeCountry("Djibouti","1","Djibouti"))
+console.log(describeCountry("Ethopia","117","Addis Ababa"))
+console.log(describeCountry("Egypt","101.48","Cairo"))
+
+
+
+// 3. The world population is 7900 million people. Create a function called `percentageOfWorld1` which recieves a `population` value and reutnrs the percentage of the world population that the given population represents. For example, _China has 1441 million people, so it's about 18.2% of the world population_
+//    > **NOTE:** To calculate the percentage, divide the given `population` value by 7900 and then multiply by 100
+
+function percentageOfWorld1 (population){
+    return(population/7900*100)
+}
+
+console.log(percentageOfWorld1(1441))
+
+// 4. Call `percentageOfWorld1` for 3 populations of countries of your choice, store the results into variables, and log them to the console
+
+console.log(percentageOfWorld1(1))
+console.log(percentageOfWorld1(117))
+console.log(percentageOfWorld1(101.48))
+
+
+
+
+// 7. Log to the console whether the array has 4 elements or not (true or false)
+let myArray = [1,2,3,4]
+console. log (myArray.length === 4)
+
+
+// 5. Create an array containing 4 population values of 4 countries of your choice and store it in a varaible called `population`
+let populations = [3.5, 117, 101.48];
+
+
+
+// 6. Create an array containing all the neighbouring countries of a country of your choice. Store the array into a varaible called `neighbours`
+
+let neighbours = ["Ethopia" , "Djibouti" , "Somalia"];
+
+
+// 8. Console log one by one the countries inside the `neighbours` array.
+
+
+console.log (neighbours[0])
+console.log (neighbours[1])
+console.log (neighbours[2])
+
+
+
+// 9. Console log one by one the countries inside the `neighbours` array but this time in a reverse order.
+
+console.log (neighbours[2])
+console.log (neighbours[1])
+console.log (neighbours[0])
+
+// 10. Do exercise 8 & 9 using while loop
+
+
+//initialization in variable
+i=0;
+while (i<3) {
+
+    console.log(neighbours[i])  
+    i++
+}
+
+
+//initialization in variable
+i = 2;
+while(i>=0){
+
+     console.log(neighbours[i])  
+     i--
+}