function myReplace(str, before, after) {

return str.replace(before, (x) => (before.charCodeAt(0) >= 65 && before.charCodeAt(0) <= 90) ? after = after[0].toUpperCase() + after.slice(1) : after);

}

/*

function myReplace(str, before, after) {

if (before.charCodeAt(0) >= 65 && before.charCodeAt(0) <= 90) {

after = after[0].toUpperCase() + after.slice(1);

}

return str.replace(before, after);

}

*/

myReplace("A quick brown fox jumped over the lazy dog", "jumped", "leaped");

myReplace("Let us go to the store", "store", "mall");

// should return "Let us go to the mall".

myReplace("He is Sleeping on the couch", "Sleeping", "sitting");

// should return "He is Sitting on the couch".

myReplace("This has a spellngi error", "spellngi", "spelling");

// should return "This has a spelling error".

myReplace("His name is Tom", "Tom", "john");

// should return "His name is John".

myReplace("Let us get back to more Coding", "Coding", "algorithms");

// should return "Let us get back to more Algorithms".