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Aratz Guerra Create a List without repeating elements
Hello,
I have a List of Objects, for example:
myList = (Object1, Object2 , Object3, Object4)
where:
Object1.Name = 'NameA',
Object2.Name = 'NameB',
Object3.Name = 'NameA' and
Object4.Name='NameC'
I have to create a List of Names without repeated Names, and also I need a List that counts the number of the elements, in this example:
NonRepeatedNamesList = ('NameA','NameB','NameC');
CounterList = (2,1,1);
Can anybody help me please?
I have a List of Objects, for example:
myList = (Object1, Object2 , Object3, Object4)
where:
Object1.Name = 'NameA',
Object2.Name = 'NameB',
Object3.Name = 'NameA' and
Object4.Name='NameC'
I have to create a List of Names without repeated Names, and also I need a List that counts the number of the elements, in this example:
NonRepeatedNamesList = ('NameA','NameB','NameC');
CounterList = (2,1,1);
Can anybody help me please?
The code has the following error:
Method does not exist or incorrect signature: void contains(String) from the type Map<String,Integer>
The issue is coming because I´m using String method with Set. So I use the solution below:
List<sObject> objList = new List<sObject>(); Boolean exist = false; Boolean firstTime= true; Map<String,Integer> newMap = new Map<String,Integer>(); List<Integer> counterList = new List<Integer>(); Set<String>strSet= new Set<String>(); for(Object o: objList){ strSet.add(a.Name); exists = false; if(firstTime){ Integer total = 0; newMap.put(o.Name, ++total); firstTime = false; } else{ for(String s: newMap.keySet()){ if(s.equalsIgnoreCase(o.Name)){ exists = true; Integer total = newMap.get(a.Name); newMap.put(o.Name, ++total); break; } } if(!exists){ Integer total = 0; newMap.put(o.Name, ++total); } } } for(Integer i: newMap.values()){ counterList.add(i); }All Answers
Aratz Guerra
try this i hope this solve your problem
List<sObject> objList = new List<sObject>(); Set<String> strSet= new Set<String>(); Map<String,Integer> newMap = new Map<String,Integer>(); List<Integer> counterList = new List<Integer>(); for(sObject obj: objList){ strSet.add(obj.Name); if(!newMap.contains(obj.Name)){ Integer total = 0; newMap.put(obj.Name, ++total); } else if(newMap.contains(obj.Name)){ var total = newMap.get(obj.Name); newMap.put(obj.Name, ++total); } } for(sObject obj: objList){ if(newMap.contains(obj.Name)) counterList.add(newMap.get(obj.Name)); }The code has the following error:
Method does not exist or incorrect signature: void contains(String) from the type Map<String,Integer>
The issue is coming because I´m using String method with Set. So I use the solution below:
List<sObject> objList = new List<sObject>(); Boolean exist = false; Boolean firstTime= true; Map<String,Integer> newMap = new Map<String,Integer>(); List<Integer> counterList = new List<Integer>(); Set<String>strSet= new Set<String>(); for(Object o: objList){ strSet.add(a.Name); exists = false; if(firstTime){ Integer total = 0; newMap.put(o.Name, ++total); firstTime = false; } else{ for(String s: newMap.keySet()){ if(s.equalsIgnoreCase(o.Name)){ exists = true; Integer total = newMap.get(a.Name); newMap.put(o.Name, ++total); break; } } if(!exists){ Integer total = 0; newMap.put(o.Name, ++total); } } } for(Integer i: newMap.values()){ counterList.add(i); }