给定一个二维数组,其每一行从左到右递增排序,从上到下也是递增排序.给定一个数,判断这个数是否在该二维数组中. Consider the following matrix: [ [1, 4, 7, 11, 15], [2, 5, 8, 12, 19], [3, 6, 9, 16, 22], [10, 13, 14, 17, 24], [18, 21, 23, 26, 30] ] ] Given target = 5, return true. Given target = 20, return f…