Thread: Three ways to print "-" character

Find three ways to make the program below print 20 copies of the dash character '-' by changing /adding just one character.

int i,n=20;
for(i=0;i<n;i--){
System.out.println("-");
}

I found two solutions but till now not able to find the third one. The two solutions are

int i,n=20;
for(i=0;i<n;n--){
System.out.println("-");
}

and,

int i,n=20;
for(i=0;-i<n;i--){
System.out.println("-");
}

Please help me out in finding the third solution.

Use a "while" loop or even a "do while" loop will work good. Hence you found 2 more ways.

 
int i,n=20;
for(i=n;i>0;i--){
System.out.println("-");
}

hi andbin,I know the standard way to iterate through a for loop,this is a puzzle in which you are allowed to change only single character.So if i change my original loop

for (i=0; i<n; i--)

by

for (i=0; i<n; i++)

as suggested by you then it doesn't satisfy the one character condition.

--- Update ---

Hi ankurt,
Thanks for the Reply but the solution provided by you doesn't satisfy the one character condition.you are not allowed to change more than one character.

int i,n=20;
for(i=0;i>-n;i--){
System.out.println("-");
}

then maybe this works..

Still you changed two characters, one by changing n to -n and second you change the less than "<" operator with ">".

--- Update ---

Still you changed two characters, one by changing n to -n and second you change the less than "<" operator with ">".

Oh...I over looked that.

is someone find any solution?