8 marbles riddle generalize solution the solution to find the minimum number of weighings if you are...

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8 marbles riddle generalize solution

the solution to find the minimum number of weighings if you are given n marbles?

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8 marbles riddle generalize solution

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Rope Bridge Puzzle Four People One Flashlight Each of the campers walks at a different speed. One can...

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Rope Bridge Puzzle Four People One Flashlight

Each of the campers walks at a different speed. One can cross the bridge in 1 minute, another in 2 minutes, the third in 5 minutes, and the slowest camper takes 10 minutes to cross. How can the campers make it across in exactly 17 minutes?

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Rope Bridge Puzzle Four People One Flashlight

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2 Fuses Problem Measure 45 Minutes You have 2 fuses and a lighter. When each fuse is lit, it takes exactly...

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2 Fuses Problem Measure 45 Minutes

You have 2 fuses and a lighter. When each fuse is lit, it takes exactly one hour to burn from one end to the other. You can assume that both of the fuses are identical.

Using only those 2 fuses and the lighter, how would you measure a period of exactly 45 minutes?

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2 Fuses Problem Measure 45 Minutes

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How To Measure 4 liters using 3 liter and 5 liter Jugs Suppose you have a 3 liter jug and a 5 liter ...

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How To Measure 4 liters using 3 liter and 5 liter Jugs

Suppose you have a 3 liter jug and a 5 liter jug (this could also be in gallons). The jugs have no measurement lines on them either. How could you measure exactly 4 liter using only those jugs and as much extra water as you need?

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How To Measure 4 liters using 3 liter and 5 liter Jugs

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8 Pennies, 7 Weigh The Same In Less Than 3 steps You are given 8 pennies, 7 of which weigh exactly the...

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8 Pennies, 7 Weigh The Same In Less Than 3 steps

You are given 8 pennies, 7 of which weigh exactly the same, but one penny weighs less than the other 7. You also have a judge scale. Find the one penny that weighs the least in less than 3 steps.

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8 Pennies, 7 Weigh The Same In Less Than 3 steps

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100 Lockers Puzzle - Find Open Lockers You are standing in a school hallway lined with 100 closed lockers...

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100 Lockers Puzzle - Find Open Lockers

You are standing in a school hallway lined with 100 closed lockers. You then open all 100 lockers. After this, you then close every 2nd locker (so the 2nd, 4th, 6th…98th and 100th are all closed). Then, you go to every third locker and open it if it is closed or close it if it is open (let’s call this toggling the locker for our discussion). You proceed to toggle every nth locker on pass number n. So, for example, on pass number 16 – you will toggle every 16th locker. After your hundredth pass of the hallway, in which you toggle only locker number 100, how many lockers are now open?

In a hall with x lockers, how many lockers remain open after pass number x?

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100 Lockers Puzzle - Find Open Lockers

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Cut a Cake into 8 Pieces with 3 Cuts http://ift.tt/1xzx69F...

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Cut a Cake into 8 Pieces with 3 Cuts

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Cut a Cake into 8 Pieces with 3 Cuts

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10 Hibernate Interview Questions and Answers for Java J2EE Programmers http://ift.tt/niksG9...

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10 Hibernate Interview Questions and Answers for Java J2EE Programmers

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10 Hibernate Interview Questions and Answers for Java J2EE Programmers

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Validating Social Security Numbers through Regular Expressions | rionscode http://ift.tt/1rAMtOO...

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Validating Social Security Numbers through Regular Expressions | rionscode

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Validating Social Security Numbers through Regular Expressions | rionscode

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Bit Convertision Between Two Integers Interview Question: Write a Java method that will return the number...

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Bit Convertision Between Two Integers

Interview Question: Write a Java method that will return the number of bits that will need to be changed in order to convert an integer, X, into another integer, Y and vice versa. The method should accept two different integers as input. Answer: The key her...

Interview Question: Write a Java method that will return the number of bits that will need to be changed in order to convert an integer, X, into another integer, Y and vice versa. The method should accept two different intege...

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Count set bits in an integer | GeeksforGeeks int countSetBits(int n){ unsigned int count = 0; while ...

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Count set bits in an integer | GeeksforGeeks

int countSetBits(int n){ unsigned int count = 0; while (n) { n &= (n-1) ; count++; } return count;}

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Count set bits in an integer | GeeksforGeeks

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Java: Primitive Type vs. Class Type A variable of a class type – like a String – stores objects of its...

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Java: Primitive Type vs. Class Type

A variable of a class type – like a String – stores objects of its class differently from how variables of primitive types – like int or char – store their values.

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Java: Primitive Type vs. Class Type

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Does Java pass by reference or by value? Java passes everything by value, and not by reference http:...

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Does Java pass by reference or by value?

Java passes everything by value, and not by reference

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Does Java pass by reference or by value?

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Can constructors be synchronized in Java? No, constructors can not be synchronized in Java. In fact...

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Can constructors be synchronized in Java?



No, constructors can not be synchronized in Java. In fact using the keyword “synchronized” with a constructor is actually a syntax error. Remember that the “synchronized” keyword is used to prevent 2 or more threads from accessing a group of methods before one thread finishes execution in those methods.

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Can constructors be synchronized in Java?

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Pattern Searching | Set 8 (Suffix Tree Introduction) | GeeksforGeeks http://ift.tt/1xwQEvz...

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Pattern Searching | Set 8 (Suffix Tree Introduction) | GeeksforGeeks

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Pattern Searching | Set 8 (Suffix Tree Introduction) | GeeksforGeeks

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Reservoir Sampling | GeeksforGeeks http://ift.tt/MxNpkB

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Reservoir Sampling | GeeksforGeeks

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Reservoir Sampling | GeeksforGeeks

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bash - Show only odd lines with cat - Super User sed -n 1~2p filename http://ift.tt/eI5lUu...

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bash - Show only odd lines with cat - Super User



sed -n 1~2p filename

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bash - Show only odd lines with cat - Super User

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bash - How to keep only every nth line of a file - Super User awk 'NR == 1 || NR % 3 == 0' yourfile ...

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bash - How to keep only every nth line of a file - Super User

awk 'NR == 1 || NR % 3 == 0' yourfile

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bash - How to keep only every nth line of a file - Super User

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Reshared post from Glenn Reilly:

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Original Post from Glenn Reilly:

Pretty cool eh? 

Summary: Google’s Chrome Dev Editor is available in developer preview and runs on any computer with Chrome installed, which includes Chrome OS devices. With the software, you can write a Chrome app that can also be deployed to an Android device.

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02.07.2014 21:02

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Android is an amazing OS and the Play Store has a huge selection of apps. Which ones are the best? It's hard to say but here's our best Android apps list!

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vi - Vim delete blank lines - Stack Overflow :g/^$/d :g will execute a command on lines which match...

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vi - Vim delete blank lines - Stack Overflow



:g/^$/d

:g will execute a command on lines which match a regex. The regex is 'blank line' and the command is :d (delete)

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vi - Vim delete blank lines - Stack Overflow

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javascript - How do I disable all the onclick events on a page - Stack Overflow $("*").unbind("click...

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javascript - How do I disable all the onclick events on a page - Stack Overflow

$("*").unbind("click"); // Removes all click handlers added by javascript from every element

$("[onclick]").removeAttr("onclick"); // Finds all elements with an 'onclick' attribute, and removes that attribute

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javascript - How do I disable all the onclick events on a page - Stack Overflow

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13 Vi Editor Interview Questions And Answers http://ift.tt/1mKwrdo...

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13 Vi Editor Interview Questions And Answers

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13 Vi Editor Interview Questions And Answers

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How does InnoDB behave without a Primary Key? – Jeremy Cole If the table has no PRIMARY KEY or suitable...

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How does InnoDB behave without a Primary Key? – Jeremy Cole



If the table has no PRIMARY KEY or suitable UNIQUE index, InnoDB internally generates a hidden clustered index on a synthetic column containing row ID values. The rows are ordered by the ID that InnoDB assigns to the rows in such a table. The row ID is a 6-byte field that increases monotonically as new rows are inserted. Thus, the rows ordered by the row ID are physically in insertion order.

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How does InnoDB behave without a Primary Key? – Jeremy Cole

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EXPLAIN EXTENDED can tell you all kinds of interesting things - MySQL Performance Blog http://www.my...

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EXPLAIN EXTENDED can tell you all kinds of interesting things - MySQL Performance Blog

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EXPLAIN EXTENDED can tell you all kinds of interesting things - MySQL Performance Blog

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Differences between READ-COMMITTED and REPEATABLE-READ transaction isolation levels - MySQL Performance...

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Differences between READ-COMMITTED and REPEATABLE-READ transaction isolation levels - MySQL Performance Blog

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Differences between READ-COMMITTED and REPEATABLE-READ transaction isolation levels - MySQL Performance Blog

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PostgreSQL: Documentation: 9.1: Transaction Isolation http://ift.tt/1xf3pe1...

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PostgreSQL: Documentation: 9.1: Transaction Isolation

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PostgreSQL: Documentation: 9.1: Transaction Isolation

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MySQL :: MySQL 5.7 Reference Manual :: 14.2.4 Consistent Nonlocking Reads http://ift.tt/1qwQyDt...

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MySQL :: MySQL 5.7 Reference Manual :: 14.2.4 Consistent Nonlocking Reads

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MySQL :: MySQL 5.7 Reference Manual :: 14.2.4 Consistent Nonlocking Reads

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Difference between LEFT and RIGHT OUTER Joins in SQL - MySQL Join example 1) LEFT OUTER join includes...

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Difference between LEFT and RIGHT OUTER Joins in SQL - MySQL Join example

1) LEFT OUTER join includes unmatched rows from left table while RIGHT

OUTER join includes unmatched rows from right side of table.

2) Result of LEFT OUTER join can be seen as INNER JOIN + unmatched rows

of left able while result of RIGHT OUTER join is equal to INNER JOIN +

unmatched rows from right side table.

3) In ANSI SQL, left outer join is written as LEFT JOIN while right

outer join is written as RIGHT JOIN in select sql statements.

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Difference between LEFT and RIGHT OUTER Joins in SQL - MySQL Join example

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Remove duplicate rows mysql and leave one | //_Semicolon; DELETE u1 FROM users u1, users u2 WHERE u1...

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Remove duplicate rows mysql and leave one | //_Semicolon;

DELETE u1 FROM users u1, users u2 WHERE u1.id < u2.id AND u1.email = u2.email

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Remove duplicate rows mysql and leave one | //_Semicolon;

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How to find duplicate records in a table on database - SQL tips select name, count(name) as times from...

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How to find duplicate records in a table on database - SQL tips

select name, count(name) as times from

contacts group by name, phone having times>1;

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How to find duplicate records in a table on database - SQL tips

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Difference between Truncate and Delete command in SQL - Interview Questions with Example 1. truncate...

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Difference between Truncate and Delete command in SQL - Interview Questions with Example

1. truncate is fast delete is slow.

2. truncate doesn't do logging delete logs on per row basis.

3. rollback is possible with delete not with truncate until specifically supported by vendor.

4. truncate doesn't fire trigger, delete does.

5. Don't delete, truncate it when it comes to purge tables.

6. truncate reset identity column in table if any, delete doesn't.

7. truncate is DDL while delete is DML (use this when you are writing exam)

8. truncate doesn't support where clause, delete does.

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Difference between Truncate and Delete command in SQL - Interview Questions with Example

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SubQuery Example in SQL – Correlated vs Noncorrelated http://ift.tt/1rgbs9R...

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SubQuery Example in SQL – Correlated vs Noncorrelated

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SubQuery Example in SQL – Correlated vs Noncorrelated

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Find nth highest salary - SQL http://ift.tt/1omlbbk...

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Find nth highest salary - SQL

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Find nth highest salary - SQL

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How to find second highest or maximum salary of Employee in SQL - Interview question http://javarevi...

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How to find second highest or maximum salary of Employee in SQL - Interview question

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How to find second highest or maximum salary of Employee in SQL - Interview question

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MySQL (InnoDB) clustered and non-clustered indexes - MySQL http://ift.tt/1pUn3b0(innodb...

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MySQL (InnoDB) clustered and non-clustered indexes - MySQL

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MySQL (InnoDB) clustered and non-clustered indexes - MySQL

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Difference between Clustered Index and Non Clustered Index in SQL Server - Database Interview Question...

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Difference between Clustered Index and Non Clustered Index in SQL Server - Database Interview Question

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Difference between Clustered Index and Non Clustered Index in SQL Server - Database Interview Question

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Using bitmap indexes in databases « kellabyte http://ift.tt/1pUn2Uj...

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Using bitmap indexes in databases « kellabyte

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Using bitmap indexes in databases « kellabyte

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Interview Questions: Database Indexes http://ift.tt/1pUmZYz

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Interview Questions: Database Indexes

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Interview Questions: Database Indexes

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A Simple Explanation on How B-Tree Database Indexes Work | Kyle's Cousin http://ift.tt/1qhx6sE...

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A Simple Explanation on How B-Tree Database Indexes Work | Kyle's Cousin

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A Simple Explanation on How B-Tree Database Indexes Work | Kyle's Cousin

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An Absolute Beginner’s Introduction to Database Indexes | Kyle's Cousin http://ift.tt/1rdXSnz...

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An Absolute Beginner’s Introduction to Database Indexes | Kyle's Cousin

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An Absolute Beginner’s Introduction to Database Indexes | Kyle's Cousin

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Check .NET Framework Version http://ift.tt/1vsuojm

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Check .NET Framework Version

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Check .NET Framework Version

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Memory Layout of C Programs | GeeksforGeeks A typical memory representation of C program consists of...

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Memory Layout of C Programs | GeeksforGeeks



A typical memory representation of C program consists of following sections.

1. Text segment

2. Initialized data segment

3. Uninitialized data segment

4. Stack

5. Heap

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Memory Layout of C Programs | GeeksforGeeks

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Regex Tutorial - Backreferences To Match The Same Text Again http://ift.tt/1r7bK2L...

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Regex Tutorial - Backreferences To Match The Same Text Again

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Regex Tutorial - Backreferences To Match The Same Text Again

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Difference Between Thread and Process | Difference Between | Thread vs Process 1. A process can contain...

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Difference Between Thread and Process | Difference Between | Thread vs Process

1. A process can contain more than one thread.

2. A process is considered as “heavyweight” while a thread is deemed as “lightweight”.

3. Processes are heavily dependent on system resources available while threads require minimal amounts of resource.

4. Modifying a main thread may affect subsequent threads while changes on a parent process will not necessarily affect child processes.

5. Threads within a process communicate directly while processes do not communicate so easily.

6. Threads are easy to create while processes are not that straightforward.

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Difference Between Thread and Process | Difference Between | Thread vs Process

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Jitendrakumaryogi: Difference between Swapping and Paging in linux http://ift.tt/1r1i5Nf...

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Jitendrakumaryogi: Difference between Swapping and Paging in linux

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Jitendrakumaryogi: Difference between Swapping and Paging in linux

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