EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (File No. 333-37336) of DDi Corp. of our report dated January 29, 2002 relating to the consolidated financial statements and financial statement schedule, which appears in this Form 10-K. /s/ PRICEWATERHOUSECOOPERS LLP - ------------------------------- PricewaterhouseCoopers LLP Orange County, California March 22, 2002