Cycle Checking , Topsort , Connected Components , Strongly Connected Components , Articulation Points , Articulation Bridge etc various algorihms are actually application of DFS .
Light OJ 1049 : Solution
Light OJ 1111 : Solution
Light OJ 1185 : Solution
Codeforces 883G : Solution
Light OJ 1003 : Solution
Light OJ 1390 : Solution
Codeforces 1385E: Solution
Codeforces 999E: Solution
Light OJ 1034: Solution
UVA 10305: Solution
UVA 11060: Solution
UVA 11686: Solution
UVA 124: Solution
UVA 872: Solution