以字符X在A1中出现次数为例，输入公式 =LEN（A1）一LEN（SUBSTITUTE(A1,"X",""))原理：将A1中的X...
//查找某关键字在目标字符串中出现次数及位置- (NSMutableArray *)filterString { NSString*str =@"abcdefg&123_我们haha,.123hf 123"; NSLog(@"%lu~~%i",strlen((char*)[str UTF8String]),[str length]); NSRange range={0,0}; NSMutableArray*arr = [[NSMutableArray alloc]initWithCapacity:0];...
=LEN(A1)-LEN(SUBSTITUTE(A1,1,""))式中A1为包含要计数的子字符串的完整字符串所在单元格的索引，...