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EASY JAVA CODING Q , PLEASE HELP!

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Ok, so I have a list of 1000 numbers. I also have a hashing function (we are working on hashing in class at the moment) and am going to insert 900 of the numbers i have (keys) into the hash function in 9 batches of 100... because I am comparing the effectiveness of different hashing functions using number of probes per insertion as a metric.

My question is that I need help with the coding aspect. I have my hashing table implementations, but I do not know how to calculate number of probes. I know i need to break up my keys into 9 batches of 100 (I will most likely use a for loop for this and iterate through batches) but how do I code something to count the number of probes? (so how do I make a counter that will add one for every probe (insertion and collision) for a hash table. ? Thanks !

Useful tips from the document I need to finish: Use a two-digit fractional precision (e.g. 1.76) when calculating the average numbers. Count duplicate keys as different ones. Note that each insertion requires at least one probe (for the initial hashing) and, if there are collisions, additional probes.