How to get char from String Array in java?

I have 5 buttons in my project and i have 2 arrays 1st array its correct answer 2nd its extra letters public class MainActivity extends AppCompatActivity { //my buttons Button b1,b2,b3,b4,b5; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //correct Answer String pets[] = {“cat”}; //extra letters char Char[]={‘d’,’b’,’f’,’d’,’e’}; Button b1 = (findViewById(R.id.b1)); Button b2…

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apply a function to a parameter grid and return a list of lists in purrr

I often use lists of lists to apply a function (often a model call) onto a grid of parameters. Here is an example with paste as the ultimate function: library(tidyverse) #purrr a=c(“A”, “B”, “C”) %>% set_names %>% map(function(x){ c(“m0”, “m1”) %>% set_names %>% map(function(y){ c(“absolute”, “relative”) %>% set_names %>% map(function(z){ paste(x,y,z) }) }) }) a$A$m0$absolute…

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