Fix: Erasing zeros from the vector element in Rcpp
In Rcpp, you can erase zeros from a vector element using C++ code within an Rcpp function. Here's how you can achieve this: ```cpp #include <Rcpp.h> using namespace Rcpp; // Function to erase zeros from a vector element NumericVector eraseZeros(NumericVector x) { NumericVector result; for (int i = 0; i < x.size(); i++) { if (x[i] != 0) { result.push_back(x[i]); } } return result; } // [[Rcpp::export]] NumericVector eraseZerosInRcpp(NumericVector x) { return eraseZeros(x); } /*** R # Example usage x <- c(1, 0, 2, 0, 3, 0, 4) result <- eraseZerosInRcpp(x) cat("Original vector: ", x, "\n") cat("Vector with zeros erased: ", result, "\n") */ ``` In this code: 1. We define a function `eraseZeros` that takes a `NumericVector` as input and creates a new `NumericVector` called `result`. 2. We iterate through each element of the input vector `x`. If the element is not equal to zero, we append it to the `res