Implement getOrdinalNumber with correct suffix logic

Pretty Taruvinga · Pretty Taruvinga · commit 9d908d9cdbdf · 2026-02-25T12:52:49.000+02:00
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -1,5 +1,7 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const suffixes = ["th", "st", "nd", "rd"];
+  const v = num % 100;
+  return num + (suffixes[(v - 20) % 10] || suffixes[v] || suffixes[0]);
 }
 
 module.exports = getOrdinalNumber;

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,7 @@`
`1`	`1`	`function getOrdinalNumber(num) {`
`2`		`- return "1st";`
	`2`	`+ const suffixes = ["th", "st", "nd", "rd"];`
	`3`	`+ const v = num % 100;`
	`4`	`+ return num + (suffixes[(v - 20) % 10] \|\| suffixes[v] \|\| suffixes[0]);`
`3`	`5`	`}`
`4`	`6`
`5`	`7`	`module.exports = getOrdinalNumber;`