摘要：
Given an array A of positive integers, call a (contiguous, not necessarily distinct) subarray of A good if the number of different integers in that su 阅读全文
posted @ 2019-02-10 22:43
yuxihong
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摘要：
On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, or; D 阅读全文
posted @ 2019-02-10 20:14
yuxihong
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Given an array equations of strings that represent relationships between variables, each string equations[i] has length 4 and takes one of two differe 阅读全文
posted @ 2019-02-10 19:06
yuxihong
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For a non-negative integer X, the array-form of X is an array of its digits in left to right order. For example, if X = 1231, then the array form is [ 阅读全文
posted @ 2019-02-10 17:46
yuxihong
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