Rotating List and maintaining word number
I'm at my wits end with this problem and would love some feedback.
I am currently trying to rotate a string to the right line by line (input coming from a file). The input could potentially have many lines, so the rotation needs to happen per line.
For example, rotating this to the right by 5
"and line breaks^$@ "
would end up being: "^$@ and line breaks"
Now for my code:
I'm working with a List and have done the following (pardon the random print lines, was debugging the old way :] ):
private static List<String> rflag(String value, List<String> lines) {
List<String> newLines = new ArrayList<>();
int rvalue = Integer.parseInt(value);
for (String line : lines) {
StringBuilder sb = new StringBuilder();
if (!line.isEmpty()) {
List <Character> chars= new ArrayList<>();
for(char ch: line.toCharArray()){
chars.add(ch);
}
Collections.rotate(chars, rvalue);
sb.append(chars);
// System.out.println("sb" + sb);
String text = sb.toString()
.replace(",", "") //remove the commas
.replace("[", "") //remove the right bracket
.replace("]", "") //remove the left bracket
.trim();
newLines.equals(text);
//System.out.println("nl" + newLines); //taking a look at output
//System.out.println("t-" + text); //taking a look at output
}
}
return newLines;
}
If I input something like "abcXYZ", my output ends up being [b, c, X, Y, Z, a] or bcXYZa with the removal of brackets and commas.
My main problem is that, while I can remove the brackets and commas, I'm not preserving the lines or words in an input. Anyone that can shoot me some ideas (or alternatives)? I feel like I may be overthinking this but I've spent quite a bit of time and have become frustrated :
Thanks in advanced.
java string arraylist rotation
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
add a comment |
I'm at my wits end with this problem and would love some feedback.
I am currently trying to rotate a string to the right line by line (input coming from a file). The input could potentially have many lines, so the rotation needs to happen per line.
For example, rotating this to the right by 5
"and line breaks^$@ "
would end up being: "^$@ and line breaks"
Now for my code:
I'm working with a List and have done the following (pardon the random print lines, was debugging the old way :] ):
private static List<String> rflag(String value, List<String> lines) {
List<String> newLines = new ArrayList<>();
int rvalue = Integer.parseInt(value);
for (String line : lines) {
StringBuilder sb = new StringBuilder();
if (!line.isEmpty()) {
List <Character> chars= new ArrayList<>();
for(char ch: line.toCharArray()){
chars.add(ch);
}
Collections.rotate(chars, rvalue);
sb.append(chars);
// System.out.println("sb" + sb);
String text = sb.toString()
.replace(",", "") //remove the commas
.replace("[", "") //remove the right bracket
.replace("]", "") //remove the left bracket
.trim();
newLines.equals(text);
//System.out.println("nl" + newLines); //taking a look at output
//System.out.println("t-" + text); //taking a look at output
}
}
return newLines;
}
If I input something like "abcXYZ", my output ends up being [b, c, X, Y, Z, a] or bcXYZa with the removal of brackets and commas.
My main problem is that, while I can remove the brackets and commas, I'm not preserving the lines or words in an input. Anyone that can shoot me some ideas (or alternatives)? I feel like I may be overthinking this but I've spent quite a bit of time and have become frustrated :
Thanks in advanced.
java string arraylist rotation
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
What is the purpose ofnewLines.equals(text);?
– Arnaud
Nov 21 '18 at 8:53
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
1
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13
add a comment |
I'm at my wits end with this problem and would love some feedback.
I am currently trying to rotate a string to the right line by line (input coming from a file). The input could potentially have many lines, so the rotation needs to happen per line.
For example, rotating this to the right by 5
"and line breaks^$@ "
would end up being: "^$@ and line breaks"
Now for my code:
I'm working with a List and have done the following (pardon the random print lines, was debugging the old way :] ):
private static List<String> rflag(String value, List<String> lines) {
List<String> newLines = new ArrayList<>();
int rvalue = Integer.parseInt(value);
for (String line : lines) {
StringBuilder sb = new StringBuilder();
if (!line.isEmpty()) {
List <Character> chars= new ArrayList<>();
for(char ch: line.toCharArray()){
chars.add(ch);
}
Collections.rotate(chars, rvalue);
sb.append(chars);
// System.out.println("sb" + sb);
String text = sb.toString()
.replace(",", "") //remove the commas
.replace("[", "") //remove the right bracket
.replace("]", "") //remove the left bracket
.trim();
newLines.equals(text);
//System.out.println("nl" + newLines); //taking a look at output
//System.out.println("t-" + text); //taking a look at output
}
}
return newLines;
}
If I input something like "abcXYZ", my output ends up being [b, c, X, Y, Z, a] or bcXYZa with the removal of brackets and commas.
My main problem is that, while I can remove the brackets and commas, I'm not preserving the lines or words in an input. Anyone that can shoot me some ideas (or alternatives)? I feel like I may be overthinking this but I've spent quite a bit of time and have become frustrated :
Thanks in advanced.
java string arraylist rotation
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
I'm at my wits end with this problem and would love some feedback.
I am currently trying to rotate a string to the right line by line (input coming from a file). The input could potentially have many lines, so the rotation needs to happen per line.
For example, rotating this to the right by 5
"and line breaks^$@ "
would end up being: "^$@ and line breaks"
Now for my code:
I'm working with a List and have done the following (pardon the random print lines, was debugging the old way :] ):
private static List<String> rflag(String value, List<String> lines) {
List<String> newLines = new ArrayList<>();
int rvalue = Integer.parseInt(value);
for (String line : lines) {
StringBuilder sb = new StringBuilder();
if (!line.isEmpty()) {
List <Character> chars= new ArrayList<>();
for(char ch: line.toCharArray()){
chars.add(ch);
}
Collections.rotate(chars, rvalue);
sb.append(chars);
// System.out.println("sb" + sb);
String text = sb.toString()
.replace(",", "") //remove the commas
.replace("[", "") //remove the right bracket
.replace("]", "") //remove the left bracket
.trim();
newLines.equals(text);
//System.out.println("nl" + newLines); //taking a look at output
//System.out.println("t-" + text); //taking a look at output
}
}
return newLines;
}
If I input something like "abcXYZ", my output ends up being [b, c, X, Y, Z, a] or bcXYZa with the removal of brackets and commas.
My main problem is that, while I can remove the brackets and commas, I'm not preserving the lines or words in an input. Anyone that can shoot me some ideas (or alternatives)? I feel like I may be overthinking this but I've spent quite a bit of time and have become frustrated :
Thanks in advanced.
java string arraylist rotation
java string arraylist rotation
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
asked Nov 21 '18 at 8:51
GrimbyGrimby
1
1
What is the purpose ofnewLines.equals(text);?
– Arnaud
Nov 21 '18 at 8:53
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
1
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13
add a comment |
What is the purpose ofnewLines.equals(text);?
– Arnaud
Nov 21 '18 at 8:53
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
1
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13
What is the purpose of
newLines.equals(text); ?– Arnaud
Nov 21 '18 at 8:53
What is the purpose of
newLines.equals(text); ?– Arnaud
Nov 21 '18 at 8:53
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
1
1
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13
add a comment |
1 Answer
1
active
oldest
votes
Changing
`.replace(",", "") //remove the commas`
to
`.replace(", ", "") //remove the commas`
makes this code work as You expect it.
`System.out.println(rflag("2", Arrays.asList("and line breaks")));//output: ksand line brea`
("and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". )
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
add a comment |
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1 Answer
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1 Answer
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active
oldest
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active
oldest
votes
active
oldest
votes
Changing
`.replace(",", "") //remove the commas`
to
`.replace(", ", "") //remove the commas`
makes this code work as You expect it.
`System.out.println(rflag("2", Arrays.asList("and line breaks")));//output: ksand line brea`
("and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". )
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
add a comment |
Changing
`.replace(",", "") //remove the commas`
to
`.replace(", ", "") //remove the commas`
makes this code work as You expect it.
`System.out.println(rflag("2", Arrays.asList("and line breaks")));//output: ksand line brea`
("and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". )
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
add a comment |
Changing
`.replace(",", "") //remove the commas`
to
`.replace(", ", "") //remove the commas`
makes this code work as You expect it.
`System.out.println(rflag("2", Arrays.asList("and line breaks")));//output: ksand line brea`
("and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". )
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
Changing
`.replace(",", "") //remove the commas`
to
`.replace(", ", "") //remove the commas`
makes this code work as You expect it.
`System.out.println(rflag("2", Arrays.asList("and line breaks")));//output: ksand line brea`
("and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". )
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
answered Nov 21 '18 at 9:33
Alermikon Alermikon
214
214
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
add a comment |
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
hahaha i think this is it! i'll give it a go in a bit- it's late now so will try again in the morning :) Thanks lots!
– Grimby
Nov 21 '18 at 10:07
add a comment |
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What is the purpose of
newLines.equals(text);?– Arnaud
Nov 21 '18 at 8:53
I think I was just trying different things. Can be ignored. Originally I had it as newLines.add(sb.toString());
– Grimby
Nov 21 '18 at 8:57
1
@Grimby can you just provide your sample input and expected output and the output that you are getting?
– Nawnit Sen
Nov 21 '18 at 9:10
Sure. If the input is: "and line breaks^$@" , the output currently is "^ $ @ a n d l i n e b r e a k s" but it should be "^$@ and line breaks". So as you can see the rotation is correct, but the spacing is off.
– Grimby
Nov 21 '18 at 9:13