houses-no-reverse.js

var n = readline();
var houses = readline().split(" ");

var max = -1, L = houses.length, result = new Array(n);
for (var i = L-1; i>=0; --i) {
  var T = houses[i];
  result[i] = T > max ? 0 : max - T + 1;
  max = Math.max(T, max);
}

print(result.join(" "));

houses.js

readline();
var houses = readline().split(" ");

var max = -1, L = houses.length, result = [];
for (var i = L-1; i>=0; --i) {
  var T = houses[i];
  result.push(T > max ? 0 : max - T + 1);
  max = Math.max(T, max);
}

result.reverse();
print(result.join(" "));