careercup 2.1 remove duplicates from an unsorted linked list

careercup 1.7 set zero to matrix if one zero found on its row or column

careercup 1.6 rotate the image by 90 degree

careercup 1.5 perform basic string compression

careercup 1.4 replace all spaces with '%20'

careercup 1.3 decide if one string is permutation of the other

careercup 1.2 reverse(char* str)