Method for inputting multiple integers from keyboard in Java

Example: sum of sequences

Enter two integers n and m respectively, separated by a space in the middle. N is the first item of the sequence, and the following items are the open root sign of the previous item. Find the sum of the first m items.

The first way to input and read from the keyboard: sc.hasnextint() function and sc.nextint() function

Hasnextint() determines whether the current input is an integer

The second method: sc.trim() function and sc.split() function

Sc.trim() removes the spaces at the beginning and end of the string

Sc.split() splits a string according to the specified character (string) or regular, and the result is returned in the form of string array

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