green flag to reset and update length turbo mode is recommended for long lists, shift press green flag
efficient sorting algorithm stable not adaptive space - O(n) time compl - O(nlogn) it works by merging sorted arrays doubling in length each iteration merging sorted arrays is easier to do offscreen than to visualise but its kinda like insertionsort eg: [4, 7, 2, 6, 9] [4, 7, 2, 6, 9] ^ * [4, 7, 2, 6, 9] ^ * [4, 7, 2, 6, 9] ^* [4, 7, 2, 6, 9] ^ * ^ * [2, 4, 6, 7, 9] ^ * [2, 4, 6, 7, 9] ^*^* [2, 4, 6, 7, 9] ^ * ^* [2, 4, 6, 7, 9] ^ *
