g0201_0300.s0279_perfect_squares

Class Solution

java.lang.Object

g0201_0300.s0279_perfect_squares.Solution

public class Solution
extends Object

279 - Perfect Squares.

Medium

Given an integer n, return the least number of perfect square numbers that sum to n.

A perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. For example, 1, 4, 9, and 16 are perfect squares while 3 and 11 are not.

Example 1:

Input: n = 12

Output: 3

Explanation: 12 = 4 + 4 + 4.

Example 2:

Input: n = 13

Output: 2

Explanation: 13 = 4 + 9.

Constraints:

• 1 <= n <= 104

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	numSquares(int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

numSquares

public int numSquares(int n)