43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
function contains(haystack, needle) {
|
|
return haystack.indexOf(needle) !== -1;
|
|
}
|
|
|
|
function commatize(text, start_index = 0, step = 3, separator = ",") {
|
|
console.log("Before: " + text);
|
|
const size = text.length;
|
|
|
|
for (let i = start_index; i < size; ++i) {
|
|
if (contains("123456789", text[i])) {
|
|
for (let j = i + 1; j <= size; ++j) {
|
|
if (j > size || !contains("0123456789", text[j])) {
|
|
for (let k = j - 1 - step; k >= i; k -= step) {
|
|
text = text.slice(0, k + 1) + separator + text.slice(k + 1);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
console.log(" After: " + text + "\n");
|
|
}
|
|
|
|
function main() {
|
|
commatize("pi=3.14159265358979323846264338327950288419716939937510582097494459231", 6, 5, " ");
|
|
commatize("The author has two Z$100000000000000 Zimbabwe notes (100 trillion).");
|
|
commatize("\"-in Aus$+1411.8millions\"");
|
|
commatize("===US$0017440 millions=== (in 2000 dollars)");
|
|
commatize("123.e8000 is pretty big.");
|
|
commatize("The land area of the earth is 57268900(29% of the surface) square miles.");
|
|
commatize("Ain't no numbers in this here words, nohow, no way, Jose.");
|
|
commatize("James was never known as 0000000007");
|
|
commatize("Arthur Eddington wrote: I believe there are " +
|
|
"15747724136275002577605653961181555468044717914527116709366231425076185631031296" +
|
|
" protons in the universe.");
|
|
commatize(" $-140000±100 millions.");
|
|
commatize("6/9/1946 was a good year for some.");
|
|
}
|
|
|
|
main();
|