Cov txheej txheem:

TreeMap ua haujlwm li cas hauv Java nrog piv txwv?
TreeMap ua haujlwm li cas hauv Java nrog piv txwv?

Video: TreeMap ua haujlwm li cas hauv Java nrog piv txwv?

Video: TreeMap ua haujlwm li cas hauv Java nrog piv txwv?
Video: Excel - Treemap with CAD Data 2024, Kaum ib hlis
Anonim

TreeMap hauv Java . Cov TreeMap yog siv los siv Map interface thiab NavigableMap nrog rau Chav Kawm Abstract. HashMap thiab LinkedHashMap siv cov ntaub ntawv array los khaws cov nodes tab sis cov TreeMap siv cov qauv ntaub ntawv hu ua Red-Black tree. Tsis tas li ntawd, tag nrho nws cov khoom khaws cia hauv lub TreeMap raug txheeb los ntawm qhov tseem ceeb.

Tom qab ntawd, TreeMap yog dab tsi hauv Java nrog piv txwv?

TreeMap hauv Java nrog Piv txwv . Los ntawm Chaitanya Singh | Filed under: Java Kev sau. TreeMap yog tsob ntoo Liab-Dub raws li kev siv NavigableMap. Nws raug txheeb raws li qhov kev txiav txim ntawm nws cov yuam sij. TreeMap chav kawm siv Map interface zoo ib yam li HashMap chav kawm.

Kuj Paub, TreeMap ua dab tsi? Treemapping yog cov txheej txheem kev pom cov ntaub ntawv uas siv los tso saib cov ntaub ntawv hierarchical siv cov duab plaub nested; tus daim duab ntoo daim ntawv yog tsim raws li cov txheej txheem ntawm cov ntaub ntawv visualization. Cov daim duab ntoo daim ntawv qhia yog siv los sawv cev cov ntaub ntawv hierarchical hauv ib tsob ntoo zoo li cov qauv.

Yog li ntawd, TreeMap yog dab tsi hauv Java?

Java TreeMap chav kawm yog ib tsob ntoo liab-dub raws li kev siv. Nws muab cov txiaj ntsig zoo ntawm kev khaws cov khoom tseem ceeb-tus nqi hauv kev txheeb xyuas. Cov ntsiab lus tseem ceeb txog Java TreeMap chav kawm yog: Java TreeMap muaj nuj nqis raws li tus yuam sij. Nws siv NavigableMap interface thiab txuas ntxiv chav kawm AbstractMap.

Koj iterate li cas hauv TreeMap?

Hauv ntej, kom tau txais TreeMap Iterator koj yuav tsum:

  1. Tsim TreeMap tshiab.
  2. Populate daim ntawv qhia nrog cov ntsiab lus, nrog muab (K qhov tseem ceeb, V tus nqi) API txoj kev ntawm TreeMap.
  3. Invoke entrySet() API txoj kev ntawm TreeMap.
  4. Invoke iterator() API method of Collection kom tau tus iterator rau cov nkag.

Pom zoo: