//字符串转变为数组1
NSMutableString
- str=[[
NSMutableString
alloc]initWithFormat:@
"1,1,1,1,1,1"
];
//字符串转变为数组2
NSMutableArray
- array=[
NSMutableArray
arrayWithArray:[str componentsSeparatedByString:@
","
]];
//替换数组中的某个值
[array replaceObjectAtIndex:4 withObject:@
"2"
];
//把数组转换成字符串
NSString
*ns=[array componentsJoinedByString:@
","
];
