## Find Dev C

*10.06.2020*

*by admin*

Right click the status bar. Click on floating report window. A movable window will come up. Click on the inner tabbed close button. (You may have to right-click the report window to resize it and see the close button) After that just randomly resize the window so that it doesn't hide again. Dev-C is a free IDE for Windows that uses either MinGW or TDM-GCC as underlying compiler. Originally released by Bloodshed Software, but abandoned in 2006, it has recently been forked by Orwell, including a choice of more recent compilers. It can be downloaded from.

**Parity:** Parity of a number refers to whether it contains an odd or even number of 1-bits. The number has “odd parity”, if it contains odd number of 1-bits and is “even parity” if it contains even number of 1-bits.

Main idea of the below solution is – Loop while n is not 0 and in loop unset one of the set bits and invert parity.

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**Program:**

## C++

`// of an integer ` `# define bool int ` `// Function to get parity of number n. It returns 1 ` `// if n has odd parity, and returns 0 if n has even ` `bool` `getParity(unsigned ` `int` `n) ` `bool` `parity = 0; ` `{ ` `n = n & (n - 1); ` `return` `parity; ` `int` `main() ` `unsigned ` `int` `n = 7; ` `cout<<` `'Parity of no '` `<<n<<` `' = '` `<<(getParity(n)? ` `'odd'` `: ` `'even'` `); ` `getchar` `(); ` `} ` |

## C

`// of an integer ` `# define bool int ` `/* Function to get parity of number n. It returns 1 ` `if n has odd parity, and returns 0 if n has even ` `bool` `getParity(unsigned ` `int` `n) ` `bool` `parity = 0; ` `{ ` `n = n & (n - 1); ` `return` `parity; ` `int` `main() ` `unsigned ` `int` `n = 7; ` `(getParity(n)? ` `'odd'` `: ` `'even'` `)); ` `getchar` `(); ` `} ` |

## Java

`// of an integer ` `import` `java.lang.*; ` `import` `java.math.BigInteger; ` `class` `GFG ` `/* Function to get parity of number n. ` `returns 0 if n has even parity */` `{ ` `while` `(n != ` `0` `) ` `parity = !parity; ` `} ` `public` `static` `void` `main (String[] args) ` `int` `n = ` `12` `; ` `System.out.println(` `'Parity of no '` `+ n + ` `' = '` `+ ` `(getParity(n)? ` `'odd'` `: ` `'even'` `)); ` `} ` |

## Python3

`# It returns 1 if n has odd parity, ` `def` `getParity( n ): ` `while` `n: ` `n ` `=` `n & (n ` `-` `1` `) ` `n ` `=` `7` `( ` `'odd'` `if` `getParity(n) ` `else` `'even'` `)) ` `# This code is contributed by 'Sharad_Bhardwaj'. ` |

## C#

`using` `System; ` `class` `GFG { ` `/* Function to get parity of number n. ` `returns 0 if n has even parity */` `{ ` `while` `(n != 0) ` `parity = !parity; ` `} ` `public` `static` `void` `Main () ` `int` `n = 7; ` `+ ` `' = '` `+ (getParity(n)? ` `} ` |

## PHP

## Find Div Class Beautiful Soup

`// PHP program to find the parity ` `// number n. It returns 1 ` `// returns 0 if n has even ` `function` `getParity( ` `$n` `) ` `$parity` `= 0; ` `{ ` `$n` `= ` `$n` `& (` `$n` `- 1); ` `return` `$parity` `; ` `$n` `= 7; ` `getParity(` `$n` `)? ` `'odd'` `: ` `'even'` `; ` `// This code is contributed by anuj_67. ` |

## Dev C++ 5.11

**Output:**

Above solution can be optimized by using lookup table. Please refer to Bit Twiddle Hacks[1st reference] for details.

**Time Complexity: ** The time taken by above algorithm is proportional to the number of bits set. Worst case complexity is O(Log n).

**Uses: **Parity is used in error detection and cryptography.

## Find Dav Chapter

**References:**

http://graphics.stanford.edu/~seander/bithacks.html#ParityNaive – last checked on 30 May 2009.