Thread: Need help with String algorithms

I have an assortment of information from a buffer that I need to pick apart. I have spent hours trying to figure this out, my code works but it is chunky, large, memory inefficient, and overall poor quality. I just need help utilizing existing or new algorithms to figure this out.

This is an element from an infinite possible set and each element is organized into a structured model (see below.) How does one go about extracting a specific set of characters (the text on the lines I commented below) that have indexes that vary? The names that showed up in this example are varying and would be impossible to know beforehand.

Goal: To return an array/list of names extracted from the data model below, for example, the perfect code would return this data.

 [dasubernoob],[steelreserve],[mutagal],[nekromight],[dontkillmi],[hiiru],[animevt],[lhavewarts],[darkneocross],[eio]

It should return a set of names without knowing what they are beforehand. Help me brainstorm!

//Note that this is not java code, but a input of information that has been automatically structured.
//The variables are the values after the colons of each object.
{
	{
	"reconnectDelay": 180,
	"dataVersion": 0,
	"game": {
		"passwordSet": false,
		"spectatorsAllowed": "NONE",
		"gameType": "NORMAL_GAME",
		"practiceGameRewardsDisabledReasons": {
			"array": [
			]
		},
		"gameTypeConfigId": 1,
		"gameState": "IN_PROGRESS",
		"observers": {
			"array": [
			]
		},
		"statusOfParticipants": "1111111111",
		"glmSecurePort": 0,
		"id": 1174840217,
		"teamTwo": {
			"array": [
				{
					"index": 0,
					"timeAddedToQueue": 1385589663700,
					"accountId": 33810695,
					"queueRating": 0,
					"originalAccountNumber": 33810695,
					"botDifficulty": "NONE",
					"summonerInternalName": "dasubernoob",            //Extract out the data in quotes "dasubernoob"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 6,
					"profileIconId": 512,
					"rankedTeamGuest": false,
					"teamOwner": true,
					"summonerId": 20721375,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "DasUberNoob",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 1396213667
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589663809,
					"accountId": 112162,
					"queueRating": 0,
					"originalAccountNumber": 112162,
					"botDifficulty": "NONE",
					"summonerInternalName": "steelreserve",              //Extract out the data in quotes "steelreserve"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 21,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 85321,
					"badges": 4,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "Steel Reserve",
					"pickMode": 0,
					"originalPlatformId": "NA"
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589667918,
					"accountId": 39915078,
					"queueRating": 0,
					"originalAccountNumber": 39915078,
					"botDifficulty": "NONE",
					"summonerInternalName": "mutagal",                     //Extract out the data in quotes "mutagal"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 28,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 25324811,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "Mutagal",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 899931864
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589667918,
					"accountId": 37716646,
					"queueRating": 0,
					"originalAccountNumber": 37716646,
					"botDifficulty": "NONE",
					"summonerInternalName": "dontkillmi",                     //Extract out the data in quotes "dontkillmi"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 7,
					"profileIconId": 576,
					"rankedTeamGuest": false,
					"teamOwner": true,
					"summonerId": 23591328,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "DontKillmi",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 899931864
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589663700,
					"accountId": 32224608,
					"queueRating": 0,
					"originalAccountNumber": 32224608,
					"botDifficulty": "NONE",
					"summonerInternalName": "hiiru",                     //Extract out the data in quotes "hiiru"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 15,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 19530723,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "Hiiru",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 1396213667
				}
			]
		},
		"bannedChampions": {
			"array": [
			]
		},
		"dataVersion": 0,
		"name": "Match-1174840217",
		"spectatorDelay": 0,
		"teamOne": {
			"array": [
				{
					"index": 0,
					"timeAddedToQueue": 1385589669496,
					"accountId": 37168724,
					"queueRating": 0,
					"originalAccountNumber": 37168724,
					"botDifficulty": "NONE",
					"summonerInternalName": "eio",                     //Extract out the data in quotes "eio"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 5,
					"profileIconId": 580,
					"rankedTeamGuest": false,
					"teamOwner": true,
					"summonerId": 23158993,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "EIo",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 367099955
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589669496,
					"accountId": 36876321,
					"queueRating": 0,
					"originalAccountNumber": 36876321,
					"botDifficulty": "NONE",
					"summonerInternalName": "lhavwarts",                //Extract out the data in quotes "lhavewarts"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 3,
					"profileIconId": 515,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 22928062,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "l Hav Warts",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 367099955
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589665480,
					"accountId": 203071518,
					"queueRating": 0,
					"originalAccountNumber": 203071518,
					"botDifficulty": "NONE",
					"summonerInternalName": "nekromight",                     //Extract out the data in quotes "nekromight"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 548,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 40099514,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "Nekromight",
					"pickMode": 0,
					"originalPlatformId": "NA1",
					"teamParticipantId": 954047356
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589669496,
					"accountId": 36707870,
					"queueRating": 0,
					"originalAccountNumber": 36707870,
					"botDifficulty": "NONE",
					"summonerInternalName": "darkneocross",              //Extract out the data in quotes "darkneocross"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 584,
					"rankedTeamGuest": false,
					"teamOwner": false,
					"summonerId": 22793922,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "Darkneocross",
					"pickMode": 0,
					"originalPlatformId": "NA",
					"teamParticipantId": 367099955
				},
				{
					"index": 0,
					"timeAddedToQueue": 1385589665480,
					"accountId": 49312188,
					"queueRating": 0,
					"originalAccountNumber": 49312188,
					"botDifficulty": "NONE",
					"summonerInternalName": "animevt",                     //Extract out the data in quotes "animevt"
					"minor": false,
					"partnerId": "",
					"lastSelectedSkinIndex": 0,
					"profileIconId": 19,
					"rankedTeamGuest": false,
					"teamOwner": true,
					"summonerId": 34940920,
					"badges": 0,
					"pickTurn": 1,
					"dataVersion": 1,
					"clientInSynch": true,
					"summonerName": "animevt",
					"pickMode": 0,
					"originalPlatformId": "NA1",
					"teamParticipantId": 954047356
				}
			]
		},
		"terminatedCondition": "NOT_TERMINATED",
		"queueTypeName": "NORMAL",
		"glmPort": 0,
		"optimisticLock": 70,
		"roomPassword": "nFvV8IU5xGxnV740",
		"maxNumPlayers": 10,
		"queuePosition": 0,
		"terminatedConditionString": "NOT_TERMINATED",
		"expiryTime": 0,
		"gameMode": "CLASSIC",
		"mapId": 1,
		"gameStateString": "IN_PROGRESS",
		"pickTurn": 3,
		"playerChampionSelections": {
			"array": [
				{
					"dataVersion": 0,
					"summonerInternalName": "mutagal",
					"spell2Id": 14,
					"selectedSkinIndex": 0,
					"championId": 79,
					"spell1Id": 4
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "nekromight",
					"spell2Id": 11,
					"selectedSkinIndex": 0,
					"championId": 59,
					"spell1Id": 4
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "hiiru",
					"spell2Id": 4,
					"selectedSkinIndex": 0,
					"championId": 222,
					"spell1Id": 21
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "dontkillmi",
					"spell2Id": 4,
					"selectedSkinIndex": 0,
					"championId": 4,
					"spell1Id": 14
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "animevt",
					"spell2Id": 4,
					"selectedSkinIndex": 0,
					"championId": 115,
					"spell1Id": 14
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "lhavwarts",
					"spell2Id": 21,
					"selectedSkinIndex": 0,
					"championId": 67,
					"spell1Id": 4
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "darkneocross",
					"spell2Id": 4,
					"selectedSkinIndex": 0,
					"championId": 40,
					"spell1Id": 3
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "eio",
					"spell2Id": 6,
					"selectedSkinIndex": 0,
					"championId": 75,
					"spell1Id": 12
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "steelreserve",
					"spell2Id": 11,
					"selectedSkinIndex": 0,
					"championId": 5,
					"spell1Id": 4
				},
				{
					"dataVersion": 0,
					"summonerInternalName": "dasubernoob",
					"spell2Id": 14,
					"selectedSkinIndex": 6,
					"championId": 58,
					"spell1Id": 4
				}
			]
		},
		"joinTimerDuration": 12
	},
	"gameName": "match-1174840217",
	"playerCredentials": {
		"observerServerIp": "216.133.234.17",
		"playerId": 37168724,
		"dataVersion": 0,
		"serverPort": 0,
		"gameId": 1174840217,
		"lastSelectedSkinIndex": 0,
		"observerServerPort": 8088,
		"observerEncryptionKey": "0GVI3+oCQVqDOcabsZm85jTRwvOpqPjQ",
		"championId": 0,
		"observer": true,
		"summonerId": 0
	}
}

How does one go about extracting a specific set of characters (the text on the lines I commented below) from variable starting indexes?

Can you post a simple example? Show the input String and the desire set of characters you want to extract from that String.

What are "variable starting indexes" and how are they supposed to be used?

Example: The input is the entire entity of data inside the code tags. So if I wanted to extract only [variableNameHere] from this piece of data. The set of characters I desire are after "summonerInternalName:" " and before the last" So I do know how to extract that data properly.

"summonerInternalName:" "variableNameHere"

As for the "variable starting indexes", I mean to say that the indexes of the characters and strings from multiple inputs would vary, and would not remain constant. For example, "passwordSet": false, from the input above starts at index 57 when in a string. However, other inputs would have different starting indexes, such as 56, 55, 54 but would have the same template data: "passwordSet": false,

Does the input data consists of records or lines with each line consisting of two parts with each part surrounded by "s? The desired part is the second part. Given this line:
"first part" "second part here"
The desired part is: second part here

THANK YOU!