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How to swap two arrays without using temporary variable in C language?
Swap two arrays without using Temp variable. Here, we are going to use Arithmetic Operators and Bitwise Operators instead of third variable.
The logic to read the first array is as follows −
printf("enter first array ele:
");
for(i = 0; i < size; i++){
scanf("%d", &first[i]);
}The logic to read the second array is as follows −
printf("enter first array ele:
");
for(i = 0; i < size; i++){
scanf("%d", &first[i]);
}The logic to swap the two arrays without using a third variable is as follows −
for(i = 0; i < size; i++){
first[i] = first[i] + sec[i];
sec[i] = first[i] - sec[i];
first[i] = first[i] - sec[i];
}Program
Following is the C program to swap two arrays without using the Temp variable −
#include<stdio.h>
int main(){
int size, i, first[20], sec[20];
printf("enter the size of array:");
scanf("%d", &size);
printf("enter first array ele:
");
for(i = 0; i < size; i++){
scanf("%d", &first[i]);
}
printf("enter second array ele:
");
for(i = 0; i < size; i ++){
scanf("%d", &sec[i]);
}
//Swapping two Arrays
for(i = 0; i < size; i++){
first[i] = first[i] + sec[i];
sec[i] = first[i] - sec[i];
first[i] = first[i] - sec[i];
}
printf("
first array after swapping %d elements
", size);
for(i = 0; i < size; i ++){
printf(" %d \t ",first[i]);
}
printf("sec array after Swapping %d elements
", size);
for(i = 0; i < size; i ++){
printf(" %d \t ",sec[i]);
}
return 0;
}Output
When the above program is executed, it produces the following result −
enter the size of array:5 enter first array ele: 11 12 13 14 15 enter second array ele: 90 80 70 60 50 first array after swapping 5 elements 90 80 70 60 50 sec array after Swapping 5 elements 11 12 13 14 15
Updated on: 24-Mar-2021
4K+ Views
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