iOS 去掉小數點后邊多余的0

-(NSString*)removeFloatAllZero:(NSString*)string
{
    
    NSString * testNumber = string;
    NSString * outNumber = [NSString stringWithFormat:@"%@",@(testNumber.floatValue)];
    
//    價格格式化顯示
    NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
    formatter.numberStyle = kCFNumberFormatterDecimalStyle;
    NSString *formatterString = [formatter stringFromNumber:[NSNumber numberWithFloat:[outNumber doubleValue]]];
    
    NSRange range = [formatterString rangeOfString:@"."]; //現獲取要截取的字符串位置
    NSLog(@"--------%lu",(unsigned long)range.length);
 
    if (range.length>0) {
        
        NSString * result = [formatterString substringFromIndex:range.location]; //截取字符串
        
        if (result.length>=4) {
            
            formatterString=[formatterString substringToIndex:formatterString.length-1];
        }
        
    }

    NSLog(@"Formatted number string:%@",formatterString);
    
    NSLog(@"Formatted number string:%@",outNumber);
    //    輸出結果為：[1223:403] Formatted number string:123,456,789
    
    return formatterString;
}