ghoshorn的专栏

1. 7 Write a method to implement *, - , / operations. You should use only the + operator.直接t

1.2 Write a method to count the number of 2’s between 0 and n.EXAMPLEinput: 35output: 14 [list of 2’s: 2, 12, 20, 21, 22, 23, 24, 25, 26, 27,28, 29, 32]

1.3 Given two lines on a Cartesian plane, determine whether the two lines would intersect

经贾老师推荐，开始看cc150第一章是

1.5 Write an algorithm which computes the number of trailing zeros in n factorial.EXAMPLEinput: 11output: 2 (11! = 39916800)m

1.9 A circus is designing a tower routine consisting of people standing atop one another’sshoulders. For practical and aesthetic reasons, each person must be both shorter andlighter than the perso

1. 6 Write a function that adds two numbers. You should not use + or any arithmetic operators.一看就是

1.10 Given a two dimensional graph with 6000 points on it, find a line which passes the most number of points.

1.8 Design an algorithm to find the kth number such that the only prime factors are 3, 5, and 7.

1.4 Given two squares on a two dimensional plane, find a line that would cut these two squares in half.