okay

src/string_immutable.zig

@@ -45,6 +45,21 @@ pub fn startsWith(self: string, str: string) bool {
     return true;
 }
 
+pub fn endsWith(self: string, str: string) bool {
+    if (str.len > self.len) {
+        return false;
+    }
+
+    var i: usize = str.len - 1;
+    while (i > 0) : (i -= 1) {
+        if (str[i] != self[i]) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
 pub fn endsWithAny(self: string, str: string) bool {
     const end = self[self.len - 1];
     for (str) |char| {