Finding two major peaks and the valleys between the peaks of a 2D array or histogram

Question

for (int i = 0; i < c.length; i++)
{
    for(int j=0; j

        

Answer 1

maybe something like this?

import java.util.*;
color[][]  c = new color [10][2];


void setup() {
  for (int i = 0; i < c.length; i++) {
    for (int j = 0; j < c[0].length; j++) {
      c[i][j] = color(random(255), random(255), random(255));
    }
  }

  float[] reds = new float[c.length*c[0].length];

  for (int i = 0; i < reds.length; i++) {
    if ( i < c.length)
      reds[i] = red(c[i][0]);
    else
      reds[i]=red(c[i-c.length][1]);
  }
  println("\n unsorted red values");
  println(reds);
  Arrays.sort(reds);
  println("\nSORTED");
  println(reds);

  println("\n\n the bigger red value is: " + reds[reds.length-1]); 
  println("\n the 2nd bigger red value is: " + reds[reds.length-2]); 
  println("\n the smaller red value is: " + reds[0]); 
  println("\n\n cheers");
}