can you clarify it more please by using matlab program

// Java program for implementation // of Lagrange's Interpolation import java.util.*; class GFG { // To represent a data point // corresponding to x and y = f(x) static class Data { int x, y; public Data(int x, int y){ super(); this.x = x; this.y = y; } }; // function to interpolate the given // data points using Lagrange's formula // xi corresponds to the new data point // whose value is to be obtained n // represents the number of known data points static double interpolate(Data f[], int xi, int n) { double result = 0; // Initialize result for (int i = 0; i