ios - 计算 NSString 中 2 个单词之间的所有字符

Question

是否可以计算 NSString 中两个单词之间的字符数？这是字符串

NSString *myString = [NSString stringWithFormat:@"This is a test string."];

我想统计单词“This”和单词“string”之间的字符数。

这可能吗

Answer 1

你可能会这样做:

NSString *myString = [NSString stringWithFormat:@"This is a test string."];

NSInteger charCountBetween = -1;
NSRange thisRange = [myString rangeOfString:@"This"];
NSRange stringRange = [myString rangeOfString:@"string"];
if( thisRange.location != NSNotFound && stringRange.location != NSNotFound )
{
    charCountBetween = fabs(thisRange.location - stringRange.location);
    if( thisRange.location > stringRange.location )
    {
        charCountBetween -= stringRange.length;
    }
    else
    {
        charCountBetween -= thisRange.length;
    }
}