Package g0901_1000.s0990_satisfiability_of_equality_equations

Class Solution

java.lang.Object
g0901_1000.s0990_satisfiability_of_equality_equations.Solution
public class Solution extends Object
990 - Satisfiability of Equality Equations\. Medium You are given an array of strings `equations` that represent relationships between variables where each string `equations[i]` is of length `4` and takes one of two different forms: "xi==yi" or "xi!=yi".Here, xi and yi are lowercase letters (not necessarily different) that represent one-letter variable names. Return `true` _if it is possible to assign integers to variable names so as to satisfy all the given equations, or_ `false` _otherwise_. **Example 1:** **Input:** equations = ["a==b","b!=a"] **Output:** false **Explanation:** If we assign say, a = 1 and b = 1, then the first equation is satisfied, but not the second. There is no way to assign the variables to satisfy both equations. **Example 2:** **Input:** equations = ["b==a","a==b"] **Output:** true **Explanation:** We could assign a = 1 and b = 1 to satisfy both equations. **Constraints:** * `1 <= equations.length <= 500` * `equations[i].length == 4` * `equations[i][0]` is a lowercase letter. * `equations[i][1]` is either `'='` or `'!'`. * `equations[i][2]` is `'='`. * `equations[i][3]` is a lowercase letter.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • equationsPossible

      public boolean equationsPossible(String[] equations)