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Scanner input shaping
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Parcel? com . zyx . cn . Baidu _ test;

Import? Java . util . scanner;

/**

*? Write a function sum(i), sum the bits of the input shaping parameter i(i≥0), and return the sum result.

*? Test this function in the main () function, input the integer n(n∈) from the keyboard,

*? Then input n non-negative integers, and call the sum function for each non-negative integer to find the sum of digits.

*? Output the results to the screen.

*? @ Author? yltd

*/

Public? Class? SumShow? {

Public? Static electricity Invalid? main(String[]? args)? {

Scanner? sc=? New? Scanner (system. in);

System.out.println ("Please enter a number greater than or equal to 0 and less than or equal to 20");

int? Me? = sc . nextint();

Sum (1);

System.out.println ("Please enter a non-negative integer");

int? Two? = sc . nextint();

Sum (2);

}

Public? Static electricity int? sum(int? i){

int? sum? =0;

For what? (int? j? =? 0; ? j? & lt=? Me; ? j++)? {

sum+= j;

}

system . out . println(sum);

Return? Sum;

}

} Please enter a number greater than or equal to 0 and less than or equal to 20.

10

55

Please enter a non-negative integer

20

2 10