Q11- Code: Group Duplicate Values from an Array

Problem:

const input = ['apple', 'banana', 'apple', 'orange', 'banana', 'apple'];

Solution:

 

const input = ['apple', 'banana', 'apple', 'orange', 'banana', 'apple'];
const result = {};

input.forEach(item => {
  result[item] = (result[item] || 0) + 1;
});

console.log(result);
// { apple: 3, banana: 2, orange: 1 }

👉 How it works:

• Loop through each item.
• If it exists in result, increment the count.
• If not, initialize it to 1.

✅ Final Output:

{
  apple: 3,
  banana: 2,
  orange: 1
}