题解 | 游游的整数切割
游游的整数切割
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import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String result = in.next(); int length = result.length(); int count =0; for(int i =0;i<length-1;i++){ //判断和是奇数还是偶数,只需要判断前一个数字的最后一位和后一个数字的最后一位之和是奇数还是偶数 int a = Integer.parseInt(result.substring(i,i+1)); int b = Integer.parseInt(result.substring(length-1)); int number = a+b; if(number%2==0){ count++; } } System.out.println(count); } }