To find the largest number in an array, you must look at every element. If you skip one, it might be the max.
One loop from start to end. n comparisons. This is O(n).
An array of 100 elements takes roughly twice as long as 50 elements.
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
$ curl repovive.com/roadmaps/math-fundamentals/big-o-notation/linear-time-example
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