How can I make sure that when I enter an item in a java fix, first check if it is found?

Question

How can I make sure that when I enter an item in a java fix, first check if it is found?

Navigation

#1 by (1 votes)
#2 by (0 votes)

0

// Here I have the entry but how could I verify it;

Clase []c=new Clase[10];
int i=0;
do{
   System.out.println("Ingrese numero de cuenta");
   c[i]=entrada.readLine();
}while(i<c.length);

i +;

java

asked by Enrique 10.08.2018 в 15:39

source

2 answers

Can a TXT file be converted to JSON ?? Some example of JavaScript function. I'm a noob problem with tildes when listing files with cmd

score 1 · Answer 1

There is an easy way with java utils.

Clase []c=new Clase[10];
int i=0;
do{
   System.out.println("Ingrese numero de cuenta");
   String line = entrada.readLine(); 
   if(java.util.Arrays.asList(c).indexOf(line) == -1) {  
     System.out.println("El número de cuenta ya existe");
   } else {
     c[i] = line;
   }
}while(i<c.length);

asList is a static method that temporarily converts an array to be able to take advantage of all the advantages offered by Java lists.

IndexOf obtains the index where that element is found, if it does not exist, it returns -1

More information link

score 0 · Answer 2

I could implement a for for search cycle after the input of the data and before entering it into the array.

Clase []c=new Clase[10];
int i=0;
do{
  System.out.println("Ingrese numero de cuenta");
  int value = entrada.readLine();

  for(int ii=0; ii < c.length(); ii++)
  { 
    if(value != c[ii])
    {
     c[i]= value;
    }
  }
i++:
}while(i<c.length);

I hope it helps you. Greetings.