java 使用数组在java中打印偶数列

Posted 2021-05-08

private static void printEvenColumns(String[] cols){
    // prints evenly sized columns for each string in the array
    int col_width = 80;
    int row_width = col_width/cols.length;
    String format_str = "";
    format_str+="%-"+row_width+"."+row_width+"s";
    for (String s : cols) {
        System.out.printf(format_str,s);
    }
    System.out.printf("%n");
}