how to swap 3 nos without using temporary variable

Answer Posted / vivek

<?php
$a=10;
$b=20;
$c=30;


list($b,$c,$a) = array($a,$b,$c);

echo $a;
echo $b;
echo $c;


$a = $a ^ $b;
$b = $a ^ $b;
$a = $a ^ $b;
echo $a . $b;
?>

Is This Answer Correct ?    3 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

To Write a C program to remove the repeated characters in the entered expression or in entered characters(i.e) removing duplicates. String contains only lowercase characters ['a'-'z']

514


I need your help, i need a Turbo C code for this problem.. hope u'll help me guys.? Your program will have a 3x3 array. The user will input the sum of each row and each column. Then the user will input 3 values and store them anywhere, or any location or index, temporarily in the array. Your program will supply the remaining six (6) values and determine the exact location of each value in the array. Example: Input: Sum of row 1: 6 Sum of row 2: 15 Sum of row 3: 24 Sum of column 1: 12 Sum of column 2: 15 Sum of column 3: 18 Value 1: 3 Value 2: 5 Value 3: 6 Output: Sum of Row 1 2 3 6 4 5 6 15 7 8 9 24 Sum of Column 12 15 18 Note: Your program will not necessary sort the walues in the array Thanks..

2819


how to create a 3x3 two dimensional array that will give you the sums on the left and bottom columns

3138


Write a Program in 'C' To Insert a Unique Number Only. (Hint: Just Like a Primary Key Numbers In Database.) Please Some One Suggest Me a Better Solution for This question ??

1787


What is the match merge ? compare data step match merge with proc sql merge - how many types are there ? data step vs proc sql

2423






How can you relate the function with the structure? Explain with an appropriate example.

2928


Design an implement of the inputs functions for event mode

2976


write a function to give demostrate the functionality of 3d in 1d. function prototye: change(int value,int indexX,int indexY,int indexZ, int [] 1dArray); value=what is the date; indexX=x-asix indexY=y-axis indexZ=z-axis and 1dArray=in which and where the value is stored??

4161


Given a spherical surface, write bump-mapping procedure to generate the bumpy surface of an orange

2874


write a program for area of circumference of shapes

2047


could you please send the program code for multiplying sparse matrix in c????

3087


Write a routine to implement the polymarker function

4399


What is data _null_? ,Explain with code when u need to use it in data step programming ?

2834


can you use proc sql to manpulate a data set or would u prefer to use proc report ? if so why ? make up an example and explain in detail

2345


write a simple calculator c program to perform addition, subtraction, mul and div.

3162