Package g0001_0100.s0069_sqrtx

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    69 - Sqrt(x)\.

    Easy

    Given a non-negative integer x, compute and return the square root of x.

    Since the return type is an integer, the decimal digits are truncated , and only the integer part of the result is returned.

    Note: You are not allowed to use any built-in exponent function or operator, such as pow(x, 0.5) or <code>x ** 0.5</code>.

    Example 1:

    Input: x = 4

    Output: 2

    Example 2:

    Input: x = 8

    Output: 2

    Explanation: The square root of 8 is 2.82842..., and since the decimal part is truncated, 2 is returned.

    Constraints:

    • <code>0 <= x <= 2<sup>31</sup> - 1</code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer mySqrt(Integer x)

      • Methods inherited from class java.lang.Object

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