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一、接口
例子:
二、数组
public static void main(String[] args)
{
// 数组大小
int 数组的名字 = 10;
// 定义数组
double[] myList = new double[数组的名字];
myList[0] = 5.6;
myList[1] = 4.5;
myList[2] = 3.3;
myList[3] = 13.2;
myList[4] = 4.0;
myList[5] = 34.33;
myList[6] = 34.0;
myList[7] = 45.45;
myList[8] = 99.993;
myList[9] = 11123;
// 计算所有元素的总和
double sum = 0;
for (int i = 0; i < 数组的名字; i++) {
sum = sum + myList[i];
}
System.out.println("总和为: " + sum);
}
}
平均值:
public static void main(String[] args)
{
int a[]={3,5,5,7,5},i,s;
s=0;
for(i=0;i<5;i++)
s += a[i];
System.out.print(s/5);
}
}
反序:
public static void main(String[] args)
{
int i,min;
int[] A = {65,48,30,17,62};
for (int j = A.length-1; j >=0 ; j--) {
System.out.println(A[j]);
}
}
}
运行结果:62 17 30 48 65
最大最小值(写法1)
public static void main(String[] args)
{
int i,min;
int[] A = {65,48,30,17,62};
System.out.println(A[0]);
min = A[0];
System.out.print("数据A的元素包括:");
for (i = 0; i < A.length; i++)
{
System.out.print(A[i] + " ");
if (A[i] < min)
{
min = A[i];
}
}
System.out.println("\n数组的最小值是" + min);
最大最小值(写法2)
public static void main(String[] args)
{
int max = 0;
int min = 0;
int[] A= new int[]{65,48,30,17,62};
for(int a:A)
{
//最大
if (a > max)
{
max = a;
}else {
continue;
}
//最小
if (a < min){
min = a;
}else {
continue;
}
}