I am looking for a way to print an array of integers and insert a line break with a "\" at the end of the line, if the line exceeds 68 elements.
for (int i = 0; i<=n.length; i++) {
System.out.print(n[i]);
}
is used to print each element of the array, but how to I insert the line break and backslash after x (in this case 68) elements?
It should look like this:
146346...8\
37453
If you're using Java 8+, the Stream API makes for a very fluent alternative to the for loop construct:
int[] n = ...;
final int limit = 68;
System.out.println(""); // start on a new line
Arrays.stream(n)
.mapToObj(i -> ((Integer) i).toString()) // convert ints to strings
.forEach(s -> {
int i = 0;
while(i < s.length) {
System.out.print(s.substring(i, i + limit));
System.out.println(i + limit < s.length ? "\\" : "");
i += limit;
}
});
Alternatively, you could do something similar with a for loop if you're on an older Java version:
int[] n = ...;
final int limit = 68;
System.out.println(""); // start on a new line
for (int i = 0; i < n.length; i++) {
String s = Integer.toString(n[i]);
int i = 0;
while(i < s.length) {
System.out.print(s.substring(i, i + limit));
System.out.println(i + limit < s.length ? "\\" : "");
i += limit;
}
}
Either way, you just need to first convert the integer to a string, and then print only the substring up to 68 characters in length at a time. System.out.print prints output without adding a new line at the end.
this will work for you
for (int i = 0; i< n.length; i++) {
System.out.print(n[i]);
// every 68 iterations prints a \ and new line
if((i + 1) % 68 == 0) System.out.println("\\");
}
It might be easier to do in two loops
String string = "";
int size = 68;
for(int i = 0; i < n.length; i++) {
string += n[i];
}
for(int i = 0; i < string.length() / size + 1; i++) {
System.out.print(string.substring(i * size, Math.min((i + 1) * size, string.length())));
System.out.println("\\");
}
Make sure you use i < n.length as i <= n.length could produce an error in your loop
I solved it with the help of @elbraulio.
for (int i = 0; i<n.length; ++i)
n[i]=i;
for (int i = 0; i<n.length; ++i) {
System.out.print(n[i]);
if (i%68 == 0 && i !=0) System.out.println("\\");
}
Thanks everyone!
This should help
int[] intArray = { 7, 9, 5, 1, 3,... };
for(int i = 0; i<intArray.length; ++i)
{
// print elements
System.out.print(intArray[i]);
// if there is 68 element printed, then print \
if(i % 68 == 0)
System.out.print("\ \r\n");
}
if(i % 68 == 0) also escape your ` by using two `