Sequential search in Java










-2















Here I have learned to make programs in java about sequential searches. But in my program, I realized there was something that needed to be added or improved, but I was confused about how. Can anyone give me a suggestion, thank you.



example.



enter sentence : BOOK
enter letter : O
Letter O is in the index : 1 , 2


My program code.



public class sequentialSearch 

public static int sequential(String read, char target)
char arr = read.toCharArray();
for(int i = 0 ; i < arr.length ; i++)
if(arr[i] == target)
return i;


return 0;


public static void main(String args)
Scanner input = new Scanner(System.in);

System.out.print("enter sentence: : ");
String read = input.next();
System.out.print("enter letter : ");
char target = input.next(".").charAt(0);

System.out.print("Letter "+target+" is in the index – ");
System.out.println(sequetial(ars,target));











share|improve this question

















  • 4





    I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

    – Mad Physicist
    Nov 14 '18 at 18:14











  • My output can only display one index

    – m.arianand
    Nov 14 '18 at 18:17











  • You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

    – DmiN
    Nov 14 '18 at 18:20











  • You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

    – Mad Physicist
    Nov 14 '18 at 18:20











  • @m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

    – Rad
    Nov 14 '18 at 18:33















-2















Here I have learned to make programs in java about sequential searches. But in my program, I realized there was something that needed to be added or improved, but I was confused about how. Can anyone give me a suggestion, thank you.



example.



enter sentence : BOOK
enter letter : O
Letter O is in the index : 1 , 2


My program code.



public class sequentialSearch 

public static int sequential(String read, char target)
char arr = read.toCharArray();
for(int i = 0 ; i < arr.length ; i++)
if(arr[i] == target)
return i;


return 0;


public static void main(String args)
Scanner input = new Scanner(System.in);

System.out.print("enter sentence: : ");
String read = input.next();
System.out.print("enter letter : ");
char target = input.next(".").charAt(0);

System.out.print("Letter "+target+" is in the index – ");
System.out.println(sequetial(ars,target));











share|improve this question

















  • 4





    I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

    – Mad Physicist
    Nov 14 '18 at 18:14











  • My output can only display one index

    – m.arianand
    Nov 14 '18 at 18:17











  • You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

    – DmiN
    Nov 14 '18 at 18:20











  • You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

    – Mad Physicist
    Nov 14 '18 at 18:20











  • @m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

    – Rad
    Nov 14 '18 at 18:33













-2












-2








-2








Here I have learned to make programs in java about sequential searches. But in my program, I realized there was something that needed to be added or improved, but I was confused about how. Can anyone give me a suggestion, thank you.



example.



enter sentence : BOOK
enter letter : O
Letter O is in the index : 1 , 2


My program code.



public class sequentialSearch 

public static int sequential(String read, char target)
char arr = read.toCharArray();
for(int i = 0 ; i < arr.length ; i++)
if(arr[i] == target)
return i;


return 0;


public static void main(String args)
Scanner input = new Scanner(System.in);

System.out.print("enter sentence: : ");
String read = input.next();
System.out.print("enter letter : ");
char target = input.next(".").charAt(0);

System.out.print("Letter "+target+" is in the index – ");
System.out.println(sequetial(ars,target));











share|improve this question














Here I have learned to make programs in java about sequential searches. But in my program, I realized there was something that needed to be added or improved, but I was confused about how. Can anyone give me a suggestion, thank you.



example.



enter sentence : BOOK
enter letter : O
Letter O is in the index : 1 , 2


My program code.



public class sequentialSearch 

public static int sequential(String read, char target)
char arr = read.toCharArray();
for(int i = 0 ; i < arr.length ; i++)
if(arr[i] == target)
return i;


return 0;


public static void main(String args)
Scanner input = new Scanner(System.in);

System.out.print("enter sentence: : ");
String read = input.next();
System.out.print("enter letter : ");
char target = input.next(".").charAt(0);

System.out.print("Letter "+target+" is in the index – ");
System.out.println(sequetial(ars,target));








java sequential






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asked Nov 14 '18 at 18:11









m.arianandm.arianand

33




33







  • 4





    I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

    – Mad Physicist
    Nov 14 '18 at 18:14











  • My output can only display one index

    – m.arianand
    Nov 14 '18 at 18:17











  • You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

    – DmiN
    Nov 14 '18 at 18:20











  • You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

    – Mad Physicist
    Nov 14 '18 at 18:20











  • @m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

    – Rad
    Nov 14 '18 at 18:33












  • 4





    I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

    – Mad Physicist
    Nov 14 '18 at 18:14











  • My output can only display one index

    – m.arianand
    Nov 14 '18 at 18:17











  • You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

    – DmiN
    Nov 14 '18 at 18:20











  • You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

    – Mad Physicist
    Nov 14 '18 at 18:20











  • @m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

    – Rad
    Nov 14 '18 at 18:33







4




4





I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

– Mad Physicist
Nov 14 '18 at 18:14





I have no idea what you are asking. Did you get an error? If so, what? How did your output differ from the expected?

– Mad Physicist
Nov 14 '18 at 18:14













My output can only display one index

– m.arianand
Nov 14 '18 at 18:17





My output can only display one index

– m.arianand
Nov 14 '18 at 18:17













You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

– DmiN
Nov 14 '18 at 18:20





You scan your array for a match and return the first match and thereby break out of the control flow. you should store all matching indices in a collection.

– DmiN
Nov 14 '18 at 18:20













You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

– Mad Physicist
Nov 14 '18 at 18:20





You should edit the question by clicking on the "edit" button beneath it. A question should contain all relevant information.

– Mad Physicist
Nov 14 '18 at 18:20













@m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

– Rad
Nov 14 '18 at 18:33





@m.arianand first welcome to SO. Second, would you please re-read your post and put all the relevant information. Most importantly, you didn't ask any question. What is the question? "How can I improve it" is not a proper question for SO. You have to be specific, otherwise you get down-vote and most importantly no answer.

– Rad
Nov 14 '18 at 18:33












1 Answer
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You use return i; when find first match. And return exits your loop and whole sequential() function. You either need to return array or list of indexes or replace return i with simply printing that index.






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    1 Answer
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    1 Answer
    1






    active

    oldest

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    active

    oldest

    votes









    0














    You use return i; when find first match. And return exits your loop and whole sequential() function. You either need to return array or list of indexes or replace return i with simply printing that index.






    share|improve this answer



























      0














      You use return i; when find first match. And return exits your loop and whole sequential() function. You either need to return array or list of indexes or replace return i with simply printing that index.






      share|improve this answer

























        0












        0








        0







        You use return i; when find first match. And return exits your loop and whole sequential() function. You either need to return array or list of indexes or replace return i with simply printing that index.






        share|improve this answer













        You use return i; when find first match. And return exits your loop and whole sequential() function. You either need to return array or list of indexes or replace return i with simply printing that index.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 14 '18 at 18:24









        IvanIvan

        5,2281921




        5,2281921





























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