Package g0601_0700.s0640_solve_the_equation

Class Solution

java.lang.Object
g0601_0700.s0640_solve_the_equation.Solution
public class Solution extends java.lang.Object
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'.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    solveEquation(java.lang.String equation)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • solveEquation

      public java.lang.String solveEquation(java.lang.String equation)