On a grid, each square is labeled with a letter followed by an integer. Given integers numRows and numColumns, output the label for each square, followed by a space. End each row with a newline.

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Ex: If the input is $35,$ then the output is:

A$1$ A$2$ A$3$ A$4$ A$5$

B$1$ B$2$ B$3$ B$4$ B$5$

C$1$ C$2$ C$3$ C$4$ C$5$

Note:

Rows are in alphabetical order. Squares in the first row all start with the letter A$.$

Columns are in ascending order. Squares in the first column all end with the integer $1.$

Add an empty string at the beginning of the output to properly concatenate characters and integers.

Java