Answer to Question #303240 in HTML/JavaScript Web Application for king

Question

Common arrays in three arrays

given three arrays arr1,arr2,arr3 write a JS program to find the common items in the among three arrays.

sample input1

[1,2,3,'cat']

[1,'cat',4]

[1,'cat,64]

output1

[1,'cat']

sample input2

['cat','rat','dog']

['lion','fox']

['kiwi','eagle']

output2

[]

function readLine() {

 return inputString[currentLine++];

}

function main() {

 let arr1 = JSON.parse(readLine().replace(/'/g, '"'));

 let arr2 = JSON.parse(readLine().replace(/'/g, '"'));

 let arr3 = JSON.parse(readLine().replace(/'/g, '"'));

 /* Please do not modify anything above this line */

 /* Write your code here */

}

Answer 1

function readLine() {
    return inputString[currentLine++];
}
   
function main() {
    let arr1 = JSON.parse(readLine().replace(/'/g, '"'));
    let arr2 = JSON.parse(readLine().replace(/'/g, '"'));
    let arr3 = JSON.parse(readLine().replace(/'/g, '"'));
    /* Please do not modify anything above this line */

    /* Write your code here */
    let myArr = []
    arr1.map(e => {
        if (arr2.includes(e) && arr3.includes(e))
            myArr.push(e)
    })

    console.log(myArr)
}