用java实现∑1+∑2+……+∑100
时间: 2023-10-08 08:03:44 浏览: 62
用Java实现∑1 ∑2 …… ∑100的代码如下:
```java
public class Sum100 {
public static void main(String[] args) {
int sum = 0;
for (int i = 1; i <= 100; i++) {
for (int j = 1; j <= i; j++) {
sum += j;
}
}
System.out.println("∑1 ∑2 …… ∑100的结果为:" + sum);
}
}
```
相关问题
java计算1+2+3+……+100
这里是Java代码:
```java
public class Main {
public static void main(String[] args) {
int sum = 0;
for (int i = 1; i <= 100; i++) {
sum += i;
}
System.out.println("1+2+3+...+100=" + sum);
}
}
```
运行结果:
```
1+2+3+...+100=5050
```
用java的for 循环实现下述功能: 301+302+303+……+500 1+3+5+……+97+99 99+97+……+5+3+1 2+4+6+……+98+100 100+98+……+6+4+2
使用Java的for循环可以实现上述功能,具体代码如下:
1. 301+302+303+……+500的求和:
```java
int sum = 0;
for (int i = 301; i <= 500; i++) {
sum += i;
}
System.out.println("301+302+303+……+500的求和结果为:" + sum);
```
2. 1+3+5+……+97+99的求和:
```java
int sum = 0;
for (int i = 1; i <= 99; i += 2) {
sum += i;
}
System.out.println("1+3+5+……+97+99的求和结果为:" + sum);
```
3. 99+97+……+5+3+1的求和:
```java
int sum = 0;
for (int i = 99; i >= 1; i -= 2) {
sum += i;
}
System.out.println("99+97+……+5+3+1的求和结果为:" + sum);
```
4. 2+4+6+……+98+100的求和:
```java
int sum = 0;
for (int i = 2; i <= 100; i += 2) {
sum += i;
}
System.out.println("2+4+6+……+98+100的求和结果为:" + sum);
```
5. 100+98+……+6+4+2的求和:
```java
int sum = 0;
for (int i = 100; i >= 2; i -= 2) {
sum += i;
}
System.out.println("100+98+……+6+4+2的求和结果为:" + sum);
```