function printOutput() {
    let str1 = window.prompt("Enter the first string");
    let str2 = window.prompt("Enter the Second string");
    let strTemp = str1;
    let strlen1 = str1.length;
    let strlen2 = str2.length;
    for (let i = 0; i < strlen1; i++) {
        for (let j = 0; j < strlen2; j++) {     
            if (str1.charAt(i) === str2.charAt(j)) {
                str1 = str1.replace(str1.charAt(i));
            }
        }
    }

    for (let i = 0; i < strlen2; i++) {

        for (let j = 0; j < strlen1; j++) {

            if (str2.charAt(i) === strTemp.charAt(j)) {
                str2 = str2.replace(str2.charAt(i));
            }
        }
    }
    console.log(str1,str2);
}
printOutput();