Lesson-3: added classes for number operations

26.07.2021(Task 2)/Numbers.js

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+export default class Numbers {
+  constructor(firstNumber, secondNumber) {
+    this.firstNumber = firstNumber;
+    this.secondNumber = secondNumber;
+    this.result = 0;
+  }
+
+  toMorze() {
+    let digitArray = [];
+    digitArray = String(this.result).split('');
+    return digitArray.map(this.fromSybbolToMorze);
+  }
+
+  toRoman() {
+    const discharge = [['I', 'V'],
+      ['X', 'L'],
+      ['C', 'D'],
+      ['M', '']];
+
+    const position = [[],
+      [[0, 1, 0]],
+      [[0, 2, 0]],
+      [[0, 3, 0]],
+      [[0, 1, 1], [0, 1, 0]],
+      [[0, 1, 1]],
+      [[0, 1, 0], [0, 1, 1]],
+      [[0, 2, 0], [0, 1, 1]],
+      [[0, 3, 0], [0, 1, 1]],
+      [[1, 1, 0], [0, 1, 0]]];
+
+    let romanNumber = '';
+
+    const digitArray = String(this.result).split('');
+    digitArray.reverse();
+    digitArray.forEach((number, index) => {
+      position[number].forEach((element) => {
+        const romanDigit = discharge[index + element[0]][element[2]].repeat(element[1]);
+        romanNumber = romanNumber.concat(romanDigit);
+      });
+    });
+
+    return romanNumber.split('').reverse().join('');
+  }
+
+  fromSybbolToMorze(symbol) {
+    switch (symbol) {
+      case '0':
+        return '-----';
+      case '1':
+        return '.----';
+      case '2':
+        return '..---';
+      case '3':
+        return '...--';
+      case '4':
+        return '....-';
+      case '5':
+        return '.....';
+      case '6':
+        return '-....';
+      case '7':
+        return '--...';
+      case '8':
+        return '---..';
+      case '9':
+        return '----.';
+      default:
+        return symbol;
+    }
+  }
+}

26.07.2021(Task 2)/NumbersDevide.js

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+import Numbers from './Numbers';
+
+export default class NumbersDevide extends Numbers {
+  devide(resultView) {
+    this.result = this.firstNumber / this.secondNumber;
+    if (this.result < 0) {
+      console.log('canot convert negative number');
+      return this.result;
+    }
+    switch (resultView) {
+      case 'roman':
+        return this.toRoman();
+      case 'morze':
+        return this.toMorze();
+      case 'arabiс':
+        return this.result;
+      default:
+        return this.result;
+    }
+  }
+}

26.07.2021(Task 2)/NumbersDifference.js

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+import Numbers from './Numbers';
+
+export default class NumbersDifference extends Numbers {
+  difference(resultView) {
+    this.result = this.firstNumber - this.secondNumber;
+    if (this.result < 0) {
+      console.log('canot convert negative number');
+      return this.result;
+    }
+    switch (resultView) {
+      case 'roman':
+        return this.toRoman();
+      case 'morze':
+        return this.toMorze();
+      case 'arabiс':
+        return this.result;
+      default:
+        return this.result;
+    }
+  }
+}

26.07.2021(Task 2)/NumbersMultiplication.js

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+import Numbers from './Numbers';
+
+export default class NumbersMultiplication extends Numbers {
+  multiplication(resultView) {
+    this.result = this.firstNumber * this.secondNumber;
+    if (this.result < 0) {
+      console.log('canot convert negative number');
+      return this.result;
+    }
+    switch (resultView) {
+      case 'roman':
+        return this.toRoman();
+      case 'morze':
+        return this.toMorze();
+      case 'arabiс':
+        return this.result;
+      default:
+        return this.result;
+    }
+  }
+}

26.07.2021(Task 2)/NumbersSumm.js

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+import Numbers from './Numbers';
+
+export default class NumbersSumm extends Numbers {
+  summ(resultView) {
+    this.result = this.firstNumber + this.secondNumber;
+    if (this.result < 0) {
+      console.log('canot convert negative number');
+      return this.result;
+    }
+    switch (resultView) {
+      case 'roman':
+        return this.toRoman();
+      case 'morze':
+        return this.toMorze();
+      case 'arabiс':
+        return this.result;
+      default:
+        return this.result;
+    }
+  }
+}