IOS _ dictionary array groups and sorts by key, ioskey

IOS _ dictionary array groups and sorts by key, ioskey

//// Main. m // SortGroup /// Created by beyond on 14-10-26. // Copyright (c) 2014 beyond.com All rights reserved. // enabled is disabled when grouping by GroupTag and sorting by Order field # import <Foundation/Foundation. h> int main (int argc, const char * argv []) {@ autoreleasepool {// 1. define a test dictionary array NSMutableArray * dictArray = @ [@ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 0], @ "FOrder": [NSNumber numberWithInt: 0], @ "FName": @ "Baoyu"}, @ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 1], @ "FOrder": [NSNumber numberWithInt: 0], @ "FName": @ ""}, @ {@ "FEnabled": [NSNumber numberWithInt: 0], @ "FGroupTag": [NSNumber numberWithInt: 1], @ "FOrder": [NSNumber numberWithInt: 1], @ "FName": @ ""}, @ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 1], @ "FOrder": [NSNumber numberWithInt: 2], @ "FName": @ "Xiangyun"}, @ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 2], @ "FOrder": [NSNumber numberWithInt: 0], @ "FName": @" "}, @ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 3], @ "FOrder": [NSNumber numberWithInt: 0], @ "FName": @ ""}, @ {@ "FEnabled": [NSNumber numberWithInt: 1], @ "FGroupTag": [NSNumber numberWithInt: 3], @ "FOrder": [NSNumber numberWithInt: 1], @ "FName": @ "attacker"}]; // NSArray is converted to NSMutableArray // 0. If not enabled, that is, if the value of enabled is 0, the NSMutableArray * dictArr = [NSMutableArray array]; for (int I = 0; I <dictArray. count; I ++) {NSDictionary * dict = dictArray [I]; if ([dict objectForKey: @ "FEnabled"] intValue] = 1) {[dictArr addObject: dict] ;}}// NSLog (@ "Clear the array after the disabled dictionary: % @", dictArr ); // 1. Sort arrays by GroupTag NSArray * sortDesc = [NSArray arrayWithObject: [NSSortDescriptor attributes: @ "FGroupTag" ascending: YES]; NSArray * sortedArr = [dictArr attributes: sortDesc]; // NSLog (@ "sorted array: % @", sortedArr); // 2. group the array by GroupTag //, and create a group array, each element in the group array is a model array NSMutableArray * _ groupArr = [NSMutableArray array]; NSMutableArray * currentArr = [NSMutableArray array]; NSLog (@ "class -- % @", [currentArr class]); // because there must be a dictionary returned, add a [currentArr addObject: sortedArr [0]; [_ groupArr addObject: currentArr]; // if there are more than one, add if (sortedArr. count> 1) {for (int I = 1; I <sortedArr. count; I ++) {// retrieve the groupID NSMutableArray * preModelArr = [_ groupArr objectAtIndex: _ groupArr OF THE FIRST dictionary model in the previous model array of the group. count-1]; int preGroupID = [[[preModelArr objectAtIndex: 0] objectForKey: @ "FGroupTag"] intValue]; // retrieve the current dictionary and compare it with the groupID, if they are the same, they are added to the same model array. If they are not the same, NSDictionary * currentDict = sortedArr [I]; int groupID = [[currentDict objectForKey: @ "FGroupTag"] intValue]; if (groupID = preGroupID) {[currentArr addObject: currentDict];} else {// if not the same, there is a new group, create a model array and add it to the group array _ groupArr currentArr = [NSMutableArray array]; [currentArr addObject: currentDict]; [_ groupArr addObject: currentArr] ;}}} // 3. Sort each group by traversal. NSMutableArray * tempGroupArr = [NSMutableArray array]; for (optional * arr in _ groupArr) {NSArray * sortDesc = [NSArray arrayWithObject: [NSSortDescriptor Syntax: @ "FOrder" ascending: YES]; NSMutableArray * tempArr = [arr Syntax: ^ NSComparisonResult (id obj1, id obj2) {if ([obj1 objectForKey: @ "FOrder"] intValue] <[[obj2 objectForKey: @ "FOrder"] intValue]) {return NSOrderedAscending;} if ([[obj1 objectForKey: @ "FOrder"] intValue]> [[obj2 objectForKey: @ "FOrder"] intValue]) {return NSOrderedDescending;} return NSOrderedSame;}]; [tempGroupArr addObject: tempArr];} _ groupArr = tempGroupArr; NSLog (@ "encapsulated group array: % @", _ groupArr);} return 0 ;}

VC ++ two-dimensional array dictionary ordered sorting

Change scanf ("% s,", name [I]); To gets (name [I.
When scanf is used to input a string, leading to the end of the string when it encounters a space, the character following the space is entered into the next name;
Gets () is considered to end with a string input only after the carriage return.

Write a program and enter the names of several students. Use a pointer array to point to this set of strings. Sort these strings alphabetically and Output

Hope to help you.
# Include <iostream> # include <string. h> using namespace std; const int SIZE = 256; char * pName [SIZE]; int main () {int I = 0, n = 5; while (I <n) {char tmp [32] = {0}; cin> tmp; pName [I] = new char [strlen (tmp) + 1]; strcpy (pName [I], tmp); pName [I] [strlen (tmp)] = '\ 0'; I ++;} char * p = NULL; for (int p1 = 0; p1 <n; p1 ++) {for (int pos = n-1; pos> p1; pos --) {if (strcmp (pName [pos-1], pName [pos])> 0) {p = pName [pos]; pName [pos] = pName [pos-1]; pName [pos-1] = p ;}}for (int p1 = 0; p1 <n; p1 ++) {cout <pName [p1] <endl ;}}