Repeat a string: Difference between revisions

There are many ways to do this in Maple. First, the "right" (most efficient) way is to use the supplied procedures for this purpose.

These next two are essentially the same, but are less efficient (though still linear) because they create a sequence of 10 strings before concatenating them (with the built-in procedure cat) to form the result.

<lang Maple>

> cat( "abc" $ 10 );

"abcabcabcabcabcabcabcabcabcabc"

> cat( seq( "abc", i = 1 .. 10 ) );

"abcabcabcabcabcabcabcabcabcabc"

</lang>

You ''can'' build up a string in a loop, but this is highly inefficient (quadratic); don't do this.

<lang Maple>

> s := "":

> to 10 do s := cat( s, "abc" ) end: s;

"abcabcabcabcabcabcabcabcabcabc"

</lang>

If you need to build up a string incrementally, use a StringBuffer object, which keeps things linear.

Finally, note that strings and characters are not distinct datatypes in Maple; a character is just a string of length one.