Question

java数组中的数字相加

int []Day1={31,28,31,30,31,30,31,31,30,31,30,31};
我要加到365
不要重复打印直接打印到365

Answer 1

//使用一个循环，累加循环变量即可
int[] Day1={31,28,31,30,31,30,31,31,30,31,30,31};
int sum = 0;
for(int i : Day1){
sum += i;
}
System.out.println(sum);

Answer 2

public class Test2 {

public static void main(String[] args) {

int []Day1={31,28,31,30,31,30,31,31,30,31,30,31};

int sum = 0;
for(int i = 0; i < Day1.length;i++){
sum = sum + Day1[i];
}

System.out.println(sum);
}

}

Answer 3

public static void main(String[] args) throws Exception{
int []Day1={31,28,31,30,31,30,31,31,30,31,30,31};
int sum = 0;
for(int a:Day1){
sum+=a;
}
System.out.print(sum);
}

Answer 4

int []Day1={31,28,31,30,31,30,31,31,30,31,30,31};
int p=0;
for(Integer c:Day1)
p+=c;
System.out.print(p);

Answer 5

for(int i=1;i<Day.length;i++){
Day[0]+=Day[i];
}
System.out.println(Day[0]);