Untitled

package co.edu.umanizales.exercise_arrays.controller;

import org.springframework.web.bind.annotation.*;
import java.util.ArrayList;
import java.util.List;

@RestController
@RequestMapping("/arrays")
public class ArraysController {
    @PostMapping("/exercise-1")
    public int exerciseOne(@RequestBody int[] array) {
        return findMaxIndex(array);

    }

    @PostMapping("/exercise-2")
    public int exerciseTwo(@RequestBody int[] array) {
        return findMinIndexPrime(array);

    }

    @GetMapping("/exercise-3")
    public int[] exercisetheree() {
        return primeNumbersInRange(100, 300);

    }

    @PostMapping("/exercise-4")
    public int[] exerciseFour(@RequestBody int[] array) {
        return findNumbersEndFour(array);
    }

    @PostMapping("/exercise-5")
    public int exerciseFive(@RequestBody int[] array) {
        return largesNumber(array);
    }

    @PostMapping("/exercise-6")
    public String exerciseSix(@RequestBody int[] array) {
        return averageCalculate(array);
    }

    @PostMapping("/exercise-7")
    public int exerciseSeven(@RequestBody int[] array) {
        return positionSumNumbersLargest(array);
    }

    @PostMapping("/exercise-8")
    public String exercisEigth(@RequestBody int[] array) {
        return paintNumberFactorial(array);
    }


    @PostMapping("/exercise-9")
    public String exerciseNine(@RequestBody int[] array) {
        return printRangeOfNumbers(array);
    }

    @PostMapping("/sustentation")
    public String sustentation(@RequestBody int[] array) {
        return verifyEqu(array);
    }

    @GetMapping("/{num1}/{num2}")
    public String getPrimesBetweenTwoNumbers(@PathVariable int num1,
                                             @PathVariable int num2) {
        if (validateNumberPositive(num1) && validateNumberPositive(num2)) {
            if (isPrime(num1)) {
                return "Número 1 es primo";
            } else {
                return "luego seguimos";
            }
        } else {
            return "Los números deben ser positivos";
        }
    }

    private boolean validateNumberPositive(int number) {
        if (number > 0) {
            return true;
        } else {
            return false;
        }
    }

    private boolean isPrime(int number) {
        int contDiv = 0;
        int half = number / 2;
        for (int i = 2; i < half; i++) {
            if (number % i == 0) {
                contDiv++;
            }
        }
        if (contDiv == 0) {
            return true;
        } else {
            return false;
        }
    }

    private String verifyEqu(int[] array) {
        int sum = sumArray(array);
        boolean band = false;
        String cadena = "";
        for (int i = 0; i < array.length; i++) {
            if (sum - array[i] == array[i]) {
                cadena += "Pos:" + i + " Número:" + array[i] + " \n";
                band = true;
            }
        }
        if (!band) {
            return "No hay equivalencias";
        } else {
            return cadena;
        }

    }

    private int sumArray(int[] array) {
        int sum = 0;
        for (int i = 0; i < array.length; i++) {
            sum += array[i];
        }
        return sum;
    }

    private int findMaxIndex(int[] array) {
        int max = array[0];
        int position = 0;
        for (int i = 1; i < array.length; i++) {
            if (array[i] > max) {
                max = array[i];
                position = i;
            }
        }
        return position;
    }

    private int findMinIndexPrime(int[] array) {
        int maxprime = 0;
        int position = 0;

        for (int i = 0; i < array.length; i++) {
            if (isPrime(array[i])) {
                if (array[i] > maxprime) {
                    maxprime = array[i];
                    position = i;
                }

            }

        }
        return position;
    }

    private int[] primeNumbersInRange(int oneposition, int lastposition) {
        int[] primes = new int[10];
        int count = 0;

        for (int i = oneposition; i <= lastposition; i++) {
            if (isPrime(i) && count < 10) {
                primes[count] = i;
                count = count + 1;

            }
        }

        return primes;
    }

    private boolean numberFindModul(int number, int numbergo) {
        if (number % 10 == numbergo) {
            return true;
        }
        return false;
    }

    private int[] findNumbersEndFour(int[] array) {
        List<Integer> endsNumber = new ArrayList<>();

        for (int i = 0; i < array.length; i++) {
            if (numberFindModul(array[i], 4)) {
                endsNumber.add(i);
            }

        }
        return endsNumber.stream().mapToInt(i -> i).toArray();
    }


    private int largesNumber(int[] array) {
        int positionlargest = findMaxIndex(array);
        int count = 0;

        for (int i = 0; i < array.length; i++) {
            if (array[i] == array[positionlargest]) {
                count = count + 1;
            }
        }
        return count;
    }

    private String averageCalculate(int[] array) {
        int sum = sumArray(array);
        boolean band = false;
        int count = 0;
        int rest = 0;
        String result = "";
        for(int i=0; i<array.length; i++){
            if(array[i] == sum/array.length){
                result += ("la posicion es:"+i);
                band = true;
            }
        }
        if(!band){
            return "No se encuentra equivalencia";
        }else
            return result;
    }

    private int totalNumbers(int number){
        String numberToString = String.valueOf(number);
        int sum = 0;
        for (int i = 0; i < numberToString.length(); i++) {
            sum += Character.getNumericValue(numberToString.charAt(i));
        }
        return sum;
    }

    private int positionSumNumbersLargest(int[] array) {
        int largest = totalNumbers(array[0]);
        int position = 0;
        for (int i = 1; i < array.length; i++) {
            if(totalNumbers(array[i])>largest){
                largest = totalNumbers(array[i]);
                position = i;
            }

        }
        return position;
    }

    private int factorialCalculate(int number){
        int factorial = 1;
        for (int i = 1; i <= number; i++) {
            factorial = factorial * i;

        }

        return factorial;
    }

    private int[] factorialToNewArray(int[] array) {
        List<Integer> numbersFactorial = new ArrayList<>();
        for (int i = 0; i < array.length; i++) {
            numbersFactorial.add(factorialCalculate(array[i]));
        }
        return numbersFactorial.stream().mapToInt(i -> i).toArray();
    }

    private String paintNumberFactorial(int[] array) {
        StringBuilder text = new StringBuilder();
        int[] factorialArray = factorialToNewArray(array);
        for (int i = 0; i<array.length; i++) {
            text.append("el factorial de: ").append(array[i]).append(" es ").append(factorialArray[i]).append("\n");
        }
        return text.toString();
    }

    private String printNumberRanger(int start, int end) {
        StringBuilder text = new StringBuilder();
        for (int i = start; i <= end; i++) {
            text.append(i).append(" - ");

        }
        return text.toString();
    }

    private String printRangeOfNumbers(int[] array) {
        StringBuilder text = new StringBuilder();
        for (int i = 0; i < array.length; i++) {
            text.append("Los enteros comprendidos desde 1 hasta " ).append(array[i]).append(" son: ").append(printNumberRanger(1, array[i])).append("\n");
        }
        return text.toString();
    }