Introduction
Write C program to print all unique element in an array
#include <stdio.h> int main() { int arr[100], size, isUnique; int i, j, k; //Reads size of the array printf("Enter size of array: "); scanf("%d", &size); //Reads elements in array printf("Enter elements in array: "); for(i=0; i<size; i++) { scanf("%d", &arr[i]); } //Removing all duplicate elements from the array for(i=0; i<size; i++) { // Assuming cuurent element is unique */ isUnique = 1; for(j=i+1; j<size; j++) { //If any duplicate element is found if(arr[i]==arr[j]) { // Removing duplicate element for(k=j; k<size-1; k++) { arr[k] = arr[k+1]; } size--; j--; isUnique = 0; } } /* If array element is not unique then also remove the current element */ if(isUnique != 1) { for(j=i; j<size-1; j++) { arr[j] = arr[j+1]; } size--; i--; } } //Printing all unique elements in array printf("\nAll unique elements in the array are: "); for(i=0; i<size; i++) { printf("%d\t", arr[i]); } return 0; }