Java for循环中的数组
我有一个名为Java for循环中的数组,java,arrays,loops,for-loop,Java,Arrays,Loops,For Loop,我有一个名为blockHeights的数组,其中包含3个值,即1,2,3。因此blockHeights[0]等于1 我还有一个循环: for (int i = 1; i <= blockHeights.length; i++) 但是,在下一个循环中,我希望更改该变量,使其只将blockHeights[1]和blockHeights[2]添加在一起,忽略blockHeights[0] 我该怎么做呢?您可以在两个for-loop-outer-loopfor(int I=1;I尝试以下操作(我
blockHeights
的数组,其中包含3个值,即1,2,3。因此blockHeights[0]
等于1
我还有一个循环:
for (int i = 1; i <= blockHeights.length; i++)
但是,在下一个循环中,我希望更改该变量,使其只将blockHeights[1]
和blockHeights[2]
添加在一起,忽略blockHeights[0]
我该怎么做呢?您可以在两个for-loop-outer-loop
for(int I=1;I尝试以下操作(我假设第三次迭代应该只包括blockHeights[2]
,遵循模式):
对于(int i=1;i请尝试以下代码:
public class Loop {
public static void main(String[] argv) {
int[] blockHeights = new int[] {1, 2, 3};
int totalBlockHeights = 0;
for(int i = 0; i < blockHeights.length; i++) {
totalBlockHeights = 0;
for(int j = i; j < blockHeights.length; j++) {
totalBlockHeights += blockHeights[j];
}
System.out.println(totalBlockHeights);
}
}
}
公共类循环{
公共静态void main(字符串[]argv){
int[]blockHeights=新的int[]{1,2,3};
int totalBlockHeights=0;
对于(int i=0;i
你不需要两个来达到这个目的。如果你想要数组的和,以及没有第一个值的数组的和
int totalBlockHeights = 0;
for(int i = 0; i < blockHeights.length; i++){
totalBlockHeights += blockHeights[i];
}
System.out.println(totalBlockHeights);
System.out.println("totalBlockHeights without first value = " + (totalBlockHeights - blockHeights[0]));
int totalBlockHeights=0;
对于(int i=0;i
这样你只循环一次你还想让第三个循环只将blockHeights[2]分配给totalBlockHeights吗?我就是这么想的:)
public class Loop {
public static void main(String[] argv) {
int[] blockHeights = new int[] {1, 2, 3};
int totalBlockHeights = 0;
for(int i = 0; i < blockHeights.length; i++) {
totalBlockHeights = 0;
for(int j = i; j < blockHeights.length; j++) {
totalBlockHeights += blockHeights[j];
}
System.out.println(totalBlockHeights);
}
}
}
int[] blockHeights = new int[] { 1, 2, 3 };
int totalBlockHeights = 0;
int customBlockHeights = 0;
for (int i = 0; i < blockHeights.length; i++) {
totalBlockHeights += blockHeights[i];
if (i == 0) {
continue;
}
customBlockHeights += blockHeights[i];
}
System.out.println(totalBlockHeights);
System.out.println(customBlockHeights);
6
5
int totalBlockHeights = 0;
for(int i = 0; i < blockHeights.length; i++){
totalBlockHeights += blockHeights[i];
}
System.out.println(totalBlockHeights);
System.out.println("totalBlockHeights without first value = " + (totalBlockHeights - blockHeights[0]));