remove duplicates from sorted array
// Java
public int removeDuplicates(int[] nums) {
if (nums.length == 0) return 0;
int i = 0;
for (int j = 1; j < nums.length; j++) {
if (nums[j] != nums[i]) {
i++;
nums[i] = nums[j];
}
}
return i + 1;
}remove duplicates by id
interface MyArray {
id: string;
name: string;
}
const arr: MyArray[] = [{id: '1', name: 'name'}, {id: '2', name: 'name2'}, {id: '3', name: 'name3'}];
const removeDuplicates = <T extends {id: string}>(array: T[]) =>
array.reduce((acc: T[], item) => [...acc.filter(({ id }) => id !== item.id), item], []);
removeDuplicates(arr);Copyright © 2021 Codeinu
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