Finding last element in an array ( arr[arr.length - 1] )

 1) Two methods to find last element of an array

// last element in an array

// 0 1 2 3 4 5

const arr = ['A', 'B', 'C', true, 20, 'xyz'];

// 1st method

console.log(arr[5]); // A

// 2nd mehod

console.log(arr[arr.length - 1]); // arr[6-1] => arr[5]

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