Package g0601_0700.s0640_solve_the_equation

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    640 - Solve the Equation\.

    Medium

    Solve a given equation and return the value of 'x' in the form of a string "x=#value". The equation contains only '+', '-' operation, the variable 'x' and its coefficient. You should return "No solution" if there is no solution for the equation, or "Infinite solutions" if there are infinite solutions for the equation.

    If there is exactly one solution for the equation, we ensure that the value of 'x' is an integer.

    Example 1:

    Input: equation = "x+5-3+x=6+x-2"

    Output: "x=2"

    Example 2:

    Input: equation = "x=x"

    Output: "Infinite solutions"

    Example 3:

    Input: equation = "2x=x"

    Output: "x=0"

    Constraints:

    • 3 <= equation.length <= 1000

    • equation has exactly one '='.

    • equation consists of integers with an absolute value in the range [0, 100] without any leading zeros, and the variable 'x'.

    • 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 String solveEquation(String equation)

      • Methods inherited from class java.lang.Object

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