arrays intro
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const strings = ['a', 'b', 'c', 'd']; //4*4 = 16 bytes of storage
console.log(strings[2]); //O(1)
strings.push('e'); //O(1) - might be O(n) in case of dynamic arrays
console.log(strings);
strings.pop(); //O(1)
strings.pop(); //O(1)
console.log(strings);
strings.unshift('x'); //O(n)
console.log(strings);
strings.splice(2, 0, 'alien'); //O(n)
console.log(strings);
strings.splice(2, 1); //O(n)
console.log(strings);
JavaScript
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