ACTIVITY

$4\mathrm{.}4.$ I: Nested loops.

$528408\mathrm{.}3478230\mathrm{.}93zqy7$

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In Tom's postal service, each PO box is labeled with a letter followed by an integer. Given integers numRows and numColumns, output the label for each PO box, followed by a space. End each row with a newline.

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Ex: If the input is $34,$ then the output is:

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

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

$C1,C2,C3,C4$

Note:

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

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