Objective C-2-乱数、可変文字列、文字列、SubString
1010 ワード
int main(int argc, const char * argv[])
{
@autoreleasepool {
NSString *outputString = @"1234567890!@#$%^&*()";
NSMutableString *resultString = [[NSMutableString alloc] init];
NSLog(@"%d", (int)outputString.length);
for(int j=0;j<outputString.length;j++)
{
NSLog(@"Index = %d Char = %@",j, [outputString substringWithRange:NSMakeRange(j, 1)]);
}
for(int i=0;i<20;i++)
{
int index = arc4random() % outputString.length;
NSString *indexString = [outputString substringWithRange:NSMakeRange(index, 1)];
[resultString appendFormat:@"%d %@ ", index, indexString];
}
if (resultString) {
NSLog(@"%@", resultString);
}
return 0;
}
}