Medium

Quiz

#640 Solve the Equation

APPROACH

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"

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What is the optimal approach for this problem?