Given an input array, remove all any duplicate occurrences and return the array.

Question

Anonymous · Accepted Answer

private static int[] removeDuplicates(int[] a) {
		
		int[] b = new int[a.length];
		Map map = new HashMap();
		int index = 0;
		
		for(int i = 0; i < a.length; i++) {
			if(!map.containsKey(a[i])) {
				map.put(a[i], 1);
				b[index] = a[i];
				index++;
			}
		}
		
		
		return b;
	}

Anonymous · Answer

above answer isn't optimal.

no need for map, we can use set.

possibly no need to create new array, we can use the current one.

Anonymous · Answer

You can do list(set(arr)) in python

Anonymous · Answer

arr=>Array.from(new Set([...arr]))

return the number of repeated (duplicate)value. also we get array need to implement another conditi · Answer

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