# Insertion Sort

## Description

Sort an integer array into nondecreasing order using insertion sort.

## Input

The verification-case input consists of an integer array `nums` and its length `numsSize`.

## Output

The function produces the same values in nondecreasing order.

## Constraints

- The array length is positive and fits in a signed C `int`.

## Source

Classical algorithmic problem reconstructed from the verified C artifact.