array의 인덱스 번호로 element 삭제 방법 pragma solidity ^0.8.1; contract Practice { uint256[] private arr; function remove(uint256 _index) private { require(_index < arr.length, "index out of bound"); for (uint i = _index; i < arr.length - 1; i++) { arr[i] = arr[i + 1]; } arr.pop(); } function test() external { // case_1 arr = [1, 2, 3, 4, 5]; remove(2); // want : arr = [1, 2, 4, 5] // checking assert(arr[..
