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import java.util.Scanner; public class Estadistica { private static String[] logins; private static Float[][] horas; public static void leerDatos() { Scanner scanner = new Scanner(System.in); System.out.println("ingrese cantidad de alumnos a ingresar:"); int cantidadAlumnos = scanner.nextInt(); logins = new String[cantidadAlumnos]; horas = new Float[cantidadAlumnos][5]; for (int i = 0; i < logins.length; i++) { System.out.println("Ingrese login alumno: "); logins[i] = scanner.next(); System.out.println("Ingrese horas lunes para " + logins[i]); horas[i][0] = scanner.nextFloat(); System.out.println("Ingrese horas martes para " + logins[i]); horas[i][1] = scanner.nextFloat(); System.out.println("Ingrese horas miercoles para " + logins[i]); horas[i][2] = scanner.nextFloat(); System.out.println("Ingrese horas jueves para " + logins[i]); horas[i][3] = scanner.nextFloat(); System.out.println("Ingrese horas viernes para " + logins[i]); horas[i][4] = scanner.nextFloat(); } } public static Float[] getTotalHoras(Float[][] horas) { Float[] horasTotales = new Float[horas.length]; for (int i = 0; i < horas.length; i++) { float h = 0; for (int x = 0; x < horas[i].length; x++) { h += horas[i][x]; } horasTotales[i] = h; } return horasTotales; } public static int cantidadMayoresIgualesA(Float[][] horas, int indice, float tiempoMinimo) { int contador = 0; for (int x = 0; x < horas[indice].length; x++) { if (horas[indice][x] >= tiempoMinimo) { contador++; } } return contador; } public static Float[] getPromedios(Float[][] horas) { Float[] promedios = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f}; for (Float[] hora : horas) { for (int x = 0; x < 5; x++) { promedios[x] += hora[x]; } } for (int i = 0; i < promedios.length; i++) { promedios[i] = promedios[i] / horas.length; } return promedios; } public static String dibujaTabla(String[] logins, Float[][] horas, Float[] promedios) { String tabla = "Login\tL\tM\tMM\tJ\tV\tTotal\n"; Float[] totalHoras = getTotalHoras(horas); for (int i = 0; i < logins.length; i++) { tabla += logins[i] + "\t"; for (int x = 0; x < horas[i].length; x++) { tabla += horas[i][x] + "\t"; } tabla += totalHoras[i] + "\n"; } tabla += "PROM:\t"; for (Float promedio : promedios) { tabla += promedio + "\t"; } double porcentaje = 0; for(int i=0;i<horas.length;i++){ if(cantidadMayoresIgualesA(horas, i, 2f)!=5){ porcentaje++; } } porcentaje *= 100 / logins.length; tabla += "\nPorcentaje:\t"+porcentaje + "%"; return tabla; } public static String[] getLogins() { return logins; } public static Float[][] getHoras() { return horas; } public static void main(String[] args) { leerDatos(); String tabla = dibujaTabla(getLogins(), getHoras(),getPromedios(getHoras())); System.out.println(tabla); } }

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