The difference between injective and surjective

The difference between injective and surjective: Injective focuses on the one-to-one relationship between the input and output of the function. Each output value uniquely corresponds to an input value; while surjective focuses on the fact that the output value of the function can cover the entire value. Domain, to which each output value can be mapped. If you want to know more about single shot and full shot, you can read the article below this topic.