void main() {
for(int i = 1; i < 6; i ){
for(int j=1; j<=i; j ){
var str = j.toString();
String result = str '';
print(result);
}
print('');
}
}
Or just print j
getting me the same result.
That's all print in multiple lines.
I tried toString()
, but nothing changed.
CodePudding user response:
Is this maybe what you want?
void main() {
for(int i = 1; i < 6; i ){
String result = '';
for(int j=1; j<=i; j ){
result = result j.toString();
}
print(result);
}
}
Output:
1
12
123
1234
12345
Another way is to use a StringBuffer
as mentioned by @pskink which is more efficient. For example like:
StringBuffer buffer = StringBuffer();
for(int i = 1; i < 6; i ){
for(int j=1; j<=i; j ){
buffer.write(j);
}
print(buffer);
buffer.clear();
}
Or another solution is like
for(int i = 1; i < 6; i ){
print(List.generate(i, (i) => i 1).join());
}
or even the one-liner:
print(List.generate(6, (i) => List.generate(i, (i) => i 1).join()).join('\n'));