In this tutorial we will see how can we check in Python if a given number is a perfect square or not without using the sqrt function in Python.
Python3代码 classSolution:defnumSquares(self, n:int) ->int:# solution two: Lagrange's Four-square Theoremwhilen %4==0:# reduce nn /=4ifn %8==7:return4a =0whilea **2<= n: b =int((n - a **2) **0.5)ifa **2+ b **2== n:return(notnota) + (notnotb)# whether a an...
代码如下: 1classSolution(object):2defisPerfectSquare(self, num):3"""4:type num: int5:rtype: bool6"""7left, right =0, num8whileleft <=right:9mid = (left+right) / 210ifmid ** 2 ==num:11returnTrue12elifmid ** 2 <num:13left = mid + 114else:15right = mid -116returnFalse...
四平方和定理(Lagrange's Four-Square Theorem):所有自然数至多只要用四个数的平方和就可以表示。 参考链接:https://leetcode.com/discuss/56982/o-sqrt-n-in-ruby-and-c C代码: intnumSquares(intn) {while(n %4==0) n /=4;if(n %8==7)return4;for(inta=0; a*a<=n; ++a) {intb =sqrt...
Python program to print perfect numbers from the given list of integers # Define a function for checking perfect number# and print that numberdefcheckPerfectNum(n):# initialisationi=2sum=1# iterating till n//2 valuewhilei<=n //2:# if proper divisor then add it.ifn % i==0:sum+=...
Complex Numbers in Python Complex numbers are of the form, ‘a + bj’, where a is real part floating value and b is the imaginary part floating value, and j represents the square root of −1. Example: 2.5 + 2j Number Type Conversion in Python There are a few built-in Python funct...
from 1, until it becomes 0 or negative. If the value reaches 0 at some point, we can say that the number is a perfect square. However, if the value becomes negative without reaching 0, the number cannot be a perfect square. This is demonstrated below in C++, Java, and Python. ...
//C# program to check the given number is a//perfect number or not.usingSystem;classCheckPerfect{staticboolIsPerfect(intnumber){intsum=0;intiLoop=0;for(iLoop=1;iLoop<number;iLoop++){if(number%iLoop==0)sum=sum+iLoop;}if(sum==number){returntrue;}returnfalse;}staticvoidMain(string[]args)...
Python programs, usually short, of considerable difficulty, to perfect particular skills. - norvig/pytudes
Write the function perfect_square_dance(n), which takes the number of dancers n as input. As output, it should return not just Sally's partner, but a list of pairs of partner numbers, sorted by lowest numbers first (both withn a pair and across all pairs). Return None if it can't...