package com.example.kotlinanagramchecker

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import android.widget.Toast
import java.util.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val et_text1 = findViewById<EditText>(R.id.et_text1)
        val et_text2 = findViewById<EditText>(R.id.et_text2)

        et_text1.setText("cat")
        et_text2.setText("act")

        val check_btn = findViewById<Button>(R.id.check_btn)
        // when user clicks on check button
        check_btn.setOnClickListener {
            val word1: String = et_text1.text.toString()
            val word2: String = et_text2.text.toString()

            //check if words are anagrams of each other.
            val check: Boolean = areAnagram(word1, word2)

            if (check) {
                Toast.makeText(this, "Entered words are anagrams", Toast.LENGTH_SHORT).show()
            } else {
                Toast.makeText(this, "Entered words are not anagrams", Toast.LENGTH_SHORT).show()
            }
        }
    }

    // function to check
    // whether two strings are
    // anagram of each other
    private fun areAnagram(str1: String, str2: String): Boolean {
        // Both String Length must be Equal
        if (str1.length != str2.length) {
            return false
        }

        // Convert Strings to character Array
        val strArray1 = str1.toCharArray()
        val strArray2 = str2.toCharArray()

        // Sort the Arrays
        Arrays.sort(strArray1)
        Arrays.sort(strArray2)

        // Convert Arrays to String
        val sortedStr1 = String(strArray1)
        val sortedStr2 = String(strArray2)

        // Check Both String Equals
        // or not After Sorting
        // and Return value True or False
        return sortedStr1 == sortedStr2
    }
}