Creating a 2 dimensional array with loops
I'm asking this question because I need to create a two dimensional array as the program is running. All the other questions on the website have data already inside the array, which is what I don't have so I can't follow those tutorials.
Prior to this code snippet, I've got all the variables initialized properly.
Excuse my formatting, this is the first question I've asked on here
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
for (int j = 0; j < values[i]; j++){
twoDim[k[j]]=1;
}
for (int m = 0; m < numSpc; m ++){
twoDim[k[j]]=0;
}
}
}
What I'm trying to do here is make an array inside twoDim called k, and then edit the values in there. It want it to look like twoDim[[0,0,0,1,1,0,1,0,1], [1,1,1,0,0,0,1,0,1]]; except there would be 50 values in each internal array (k).
The problem is, I keep getting two different kinds of errors. One is saying it can't find the variable j (cannot find symbol) and the other error says array required, but int found about k. How can I fix this?
java arrays
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
add a comment |
I'm asking this question because I need to create a two dimensional array as the program is running. All the other questions on the website have data already inside the array, which is what I don't have so I can't follow those tutorials.
Prior to this code snippet, I've got all the variables initialized properly.
Excuse my formatting, this is the first question I've asked on here
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
for (int j = 0; j < values[i]; j++){
twoDim[k[j]]=1;
}
for (int m = 0; m < numSpc; m ++){
twoDim[k[j]]=0;
}
}
}
What I'm trying to do here is make an array inside twoDim called k, and then edit the values in there. It want it to look like twoDim[[0,0,0,1,1,0,1,0,1], [1,1,1,0,0,0,1,0,1]]; except there would be 50 values in each internal array (k).
The problem is, I keep getting two different kinds of errors. One is saying it can't find the variable j (cannot find symbol) and the other error says array required, but int found about k. How can I fix this?
java arrays
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
1.j's scope is limited only to itsfor-loop. 2. How have you definedtwoDim?
– Nicholas K
Nov 18 '18 at 16:31
twoDimwas defined withint twoDim = new int[numOfVals];.numOfValsis just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it tok[m]instead ofk[j]
– Zacki Aseer
Nov 18 '18 at 16:39
add a comment |
I'm asking this question because I need to create a two dimensional array as the program is running. All the other questions on the website have data already inside the array, which is what I don't have so I can't follow those tutorials.
Prior to this code snippet, I've got all the variables initialized properly.
Excuse my formatting, this is the first question I've asked on here
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
for (int j = 0; j < values[i]; j++){
twoDim[k[j]]=1;
}
for (int m = 0; m < numSpc; m ++){
twoDim[k[j]]=0;
}
}
}
What I'm trying to do here is make an array inside twoDim called k, and then edit the values in there. It want it to look like twoDim[[0,0,0,1,1,0,1,0,1], [1,1,1,0,0,0,1,0,1]]; except there would be 50 values in each internal array (k).
The problem is, I keep getting two different kinds of errors. One is saying it can't find the variable j (cannot find symbol) and the other error says array required, but int found about k. How can I fix this?
java arrays
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
I'm asking this question because I need to create a two dimensional array as the program is running. All the other questions on the website have data already inside the array, which is what I don't have so I can't follow those tutorials.
Prior to this code snippet, I've got all the variables initialized properly.
Excuse my formatting, this is the first question I've asked on here
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
for (int j = 0; j < values[i]; j++){
twoDim[k[j]]=1;
}
for (int m = 0; m < numSpc; m ++){
twoDim[k[j]]=0;
}
}
}
What I'm trying to do here is make an array inside twoDim called k, and then edit the values in there. It want it to look like twoDim[[0,0,0,1,1,0,1,0,1], [1,1,1,0,0,0,1,0,1]]; except there would be 50 values in each internal array (k).
The problem is, I keep getting two different kinds of errors. One is saying it can't find the variable j (cannot find symbol) and the other error says array required, but int found about k. How can I fix this?
java arrays
java arrays
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
asked Nov 18 '18 at 16:28
Zacki AseerZacki Aseer
62
62
1.j's scope is limited only to itsfor-loop. 2. How have you definedtwoDim?
– Nicholas K
Nov 18 '18 at 16:31
twoDimwas defined withint twoDim = new int[numOfVals];.numOfValsis just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it tok[m]instead ofk[j]
– Zacki Aseer
Nov 18 '18 at 16:39
add a comment |
1.j's scope is limited only to itsfor-loop. 2. How have you definedtwoDim?
– Nicholas K
Nov 18 '18 at 16:31
twoDimwas defined withint twoDim = new int[numOfVals];.numOfValsis just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it tok[m]instead ofk[j]
– Zacki Aseer
Nov 18 '18 at 16:39
1.
j's scope is limited only to its for-loop. 2. How have you defined twoDim?– Nicholas K
Nov 18 '18 at 16:31
1.
j's scope is limited only to its for-loop. 2. How have you defined twoDim?– Nicholas K
Nov 18 '18 at 16:31
twoDim was defined with int twoDim = new int[numOfVals];. numOfVals is just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it to k[m] instead of k[j]– Zacki Aseer
Nov 18 '18 at 16:39
twoDim was defined with int twoDim = new int[numOfVals];. numOfVals is just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it to k[m] instead of k[j]– Zacki Aseer
Nov 18 '18 at 16:39
add a comment |
2 Answers
2
active
oldest
votes
The issues are :
j's scope is limited only to itsfor-loop. You can't access it outside the loop.
twoDim[k[j]]=1;andtwoDim[k[j]]=0. k is of typeint, you can't try to use it as an array.
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
add a comment |
Try this
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
twoDim[k]=;
for (int j = 0; j < values[i]; j++){
twoDim[k].push(1);
}
for (int m = 0; m < numSpc; m ++){
twoDim[k].push(0);
}
}
}
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The issues are :
j's scope is limited only to itsfor-loop. You can't access it outside the loop.
twoDim[k[j]]=1;andtwoDim[k[j]]=0. k is of typeint, you can't try to use it as an array.
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
add a comment |
The issues are :
j's scope is limited only to itsfor-loop. You can't access it outside the loop.
twoDim[k[j]]=1;andtwoDim[k[j]]=0. k is of typeint, you can't try to use it as an array.
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
add a comment |
The issues are :
j's scope is limited only to itsfor-loop. You can't access it outside the loop.
twoDim[k[j]]=1;andtwoDim[k[j]]=0. k is of typeint, you can't try to use it as an array.
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
The issues are :
j's scope is limited only to itsfor-loop. You can't access it outside the loop.
twoDim[k[j]]=1;andtwoDim[k[j]]=0. k is of typeint, you can't try to use it as an array.
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
answered Nov 18 '18 at 16:42
Nicholas KNicholas K
6,90761133
6,90761133
add a comment |
add a comment |
Try this
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
twoDim[k]=;
for (int j = 0; j < values[i]; j++){
twoDim[k].push(1);
}
for (int m = 0; m < numSpc; m ++){
twoDim[k].push(0);
}
}
}
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
add a comment |
Try this
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
twoDim[k]=;
for (int j = 0; j < values[i]; j++){
twoDim[k].push(1);
}
for (int m = 0; m < numSpc; m ++){
twoDim[k].push(0);
}
}
}
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
add a comment |
Try this
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
twoDim[k]=;
for (int j = 0; j < values[i]; j++){
twoDim[k].push(1);
}
for (int m = 0; m < numSpc; m ++){
twoDim[k].push(0);
}
}
}
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
Try this
for (int i = 0; i < numOfVals; i++){
numSpc = 50 - values[i];
for (int k = 0; k < 51; k++){
twoDim[k]=;
for (int j = 0; j < values[i]; j++){
twoDim[k].push(1);
}
for (int m = 0; m < numSpc; m ++){
twoDim[k].push(0);
}
}
}
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
answered Nov 18 '18 at 16:51
Abdul AleemAbdul Aleem
12
12
add a comment |
add a comment |
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1.
j's scope is limited only to itsfor-loop. 2. How have you definedtwoDim?– Nicholas K
Nov 18 '18 at 16:31
twoDimwas defined withint twoDim = new int[numOfVals];.numOfValsis just an integer user input. I'll fix the scoping, thank you for point out that j is outside of it's loop in the second mention of it. I think i copy-pasted but forgot to change it tok[m]instead ofk[j]– Zacki Aseer
Nov 18 '18 at 16:39