什么是等比数列？

一个故事了解等比数列~ const log2n = main(100, 2); // O(log2n) [ 1, 2, 4, 8, 16, 32, 64, 128 ] sum(log2n, 2); const log3n = main(100, 3); // O(log3n) [ 1, 3, 9, 27, 81, 243 ] sum(log3n, 3); const log4n = main(10

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