Abstract: Techniques are described to address run-time issues and other considerations of data structure reorganization operations executed while decoding a polar code. A receiving entity (e.g., a user equipment or a base station) may partition an array, or other data structure, into sections. The array may be used during a list decoding operation of a polar code. As the array is populated with path elements for candidate paths, each section may be organized and a permutation pattern calculated for each section. Upon identifying a section reorganization event, the array or subsections of the array may be reorganized according the permutation patterns determined for each section.