Question

求java编程题:计算1到100累加的和

java编程
求1到100相加之和

Answer 1

public static void GetSum()
{
int sum = 0;
for(int i=1;i<=100;i++)
{
sum+=i;
}
System.out.println("和为："+sum);
}

Answer 2

我写个大概你就知道了；
int num = 1;
for(int i =2 ;i<=100;i++){
num = num+i;
}

Answer 3

//公式法求解最快
public class Sum{
public static void main(String[] args){
int x=100;
int sum=(x+1)*x/2;
System.out.println("sum: "+sum);
}
}

Answer 4

public class sum {

public int getInputValue(int bg,int end) {
int sumValue=0;
if(bg<=end)
{
for(int i=bg;i<=end;i++)
{
sumValue = sumValue+i;
}
}
return sumValue;
}

Answer 5

public class sum {

public int getInputValue(int bg,int end) {
int sumValue=0;
if(bg<=end)
{
for(int i=bg;i<=end;i++)
{
sumValue = sumValue+i;
}
}
return sumValue;
}

public static void main(String arga[]) {
sum newCount = new sum();
int resultValue = newCount.getInputValue(1,100);
System.out.println("相加的结果是：" + resultValue);
}

}