How can I test the running time of a method?

c.What is the running time of your method smallest, as a function of n, the number of elements in the list? Use big-Oh notation.
I quoated from a java problem..
Anyone can tell me how I can test the running time? Thanks ! :D

it depends on what is in the method. For example a for loop executed n times would have a O(n). A double for loop (each loopp run n times) will have O(n^2). Do this: determine how many times each loop in the method is run. This is the first term in your runtime equation. Do this for all other loops in the method and add them all together. Most other statements that are not iterative should have a constant runtime so O(1). For conditional statements, the runtime depends on the most time consuming portion of the statement. Once all these are added together, take the O(equation) which should just leave the biggest term. i.e. O(5n^2+3n+8) = O(n^2). Hope this helps.
note: this does not apply to recursive methods

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How can I test the running time of a method?

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