ios - How to generate random letters as per the word -


i’m developing word puzzle game,where 1 word given.according word random letters generated…for that, applied below logic how random letters not generated per given word.

nsmutablearray *arrofabcd = [[nsmutablearray alloc] initwithobjects:@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z", nil];

float x = 70; float y = 100; float width = 30; float height = 20; for(int =0;i<32;i++) {     nsuinteger randomindex = arc4random() %(arrofabcd.count);      uibutton *btnletter = [uibutton buttonwithtype:uibuttontyperoundedrect];     [btnletter setframe:cgrectmake(x, y, width, height)];     [btnletter settitle:[nsstring stringwithformat:@"%@",arrofabcd[randomindex]]

forstate:uicontrolstatenormal]; [self.view addsubview:btnletter];

    x = x + width + 30;      if((i+1)%4==0)     {         x = 70;         y = y + height + 20;     } }

can 1 suggest me made mistake?

   should generate unique random number       nsmutablearray*  arrofwords = [[nsmutablearray alloc] initwithobjects:@"good",@"home",@"beauty",@"good",nil];         nsmutablearray *arrofabcd = [[nsmutablearray alloc] initwithobjects:@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z", nil];          nsmutablearray *arrduplicate=[[nsmutablearray alloc]init];          float x = 70;         float y = 100;         float width = 30;         float height = 20;             nsinteger rowindex=4;               nsstring *datastring=[arrofwords objectatindex:0];             nsmutablearray *arrnumber = [[nsmutablearray alloc]init];             (int = 0; < [datastring length]; i++) {       nsinteger index=arc4random_uniform(rowindex)+rowindex;                 nsnumber *number=[nsnumber numberwithint:index];                 while ([arrduplicate containsobject:number] ) {   nsinteger index=arc4random_uniform(rowindex)+rowindex;                    number=[nsnumber numberwithint:index];                 }                 [arrnumber addobject:number];                 [arrduplicate addobject:number];             }             [arrduplicate removeallobjects];             nsmutablearray *arraychar = [nsmutablearray array];             (int = 0; < [datastring length]; i++) {                 [arraychar addobject:[nsstring stringwithformat:@"%c", [datastring characteratindex:i]]];             }             for(int =0;i<32;i++)             {                  nsstring *str=[arrofabcd objectatindex:arc4random_uniform(arrofabcd.count)];                 if ([arrnumber containsobject:[nsnumber numberwithint:i]] ) {                     str=[arraychar objectatindex:arrduplicate.count];                     [arrduplicate addobject:str];                 }                 nslog(@"%@",str);                 uibutton *btnletter = [uibutton buttonwithtype:uibuttontyperoundedrect];                 [btnletter setframe:cgrectmake(x, y, width, height)];                 [btnletter settitle:str forstate:uicontrolstatenormal];                 x = x + width + 30;                  if((i+1)%4==0)                 {                     x = 70;                     y = y + height + 20;                 }          }

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