g0601_0700.s0640_solve_the_equation

Class Solution

java.lang.Object

g0601_0700.s0640_solve_the_equation.Solution

public class Solution
extends 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 and Description
Solution()

Method Summary

Modifier and Type	Method and Description
String	solveEquation(String equation)

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

solveEquation

public String solveEquation(String equation)