Software Test Engineer L2 Interview Questions and Answers

Time complexity of loops like forEach, map etc is O(n) where n is the number of elements in the array.

• Time complexity of forEach, map, filter, and reduce functions in JavaScript is O(n) where n is the number of elements in the array.

• These functions iterate through each element in the array once, resulting in a linear time complexity.

• For example, if an array has 10 elements, the time complexity of forEach, map, filter, and reduce functions would be O(10) which simplifies to O(...read more