LeetCode-Notes

Notes, Codes and Ideas on LeetCode Problems

Arrays

• Two Pointers: 21, 26, 27, 88, 264, 283, 905, 941, 986, 1089, 1471

• 简单遍历: 1, 448, 957, 1299

• 其他：9, 344, 387, 414, 485, 1295, 1346, 1464, 1470, 1480

Bit Manipulation

• 136, 137, 231, 461

Binary Search

• 35, 136, 275, 278, 528, 540

Graphs & Search

• Graphs: 207, 332, 787, 886, 997, 1462, 1466

• Trees: 110, 129, 208, 222, 226, 315, 700, 1008, 1457

• Search: 130, 230, 463, 733, 993

Greedy

• 496, 1029

DP

• 53, 62, 72, 96, 174, 279, 338, 368, 392, 918, 1035, 1277

Linked Lists

• Two Pointers: 2, 21, 19, 328

• Others: 206, 237, 707

Math

• 60, 258, 367, 441, 1232

Sort

• 75, 169, 973, 977, 1051, 1465, 1471, 1481

Stack

• 402, 901, 1472

String Match

• 28, 438, 567, 771, 1455, 1456

Strings

• 7, 451, 476, 1044, 1461

Recursion

• 46

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Something Fun!

787. Cheapest Flights Within K Stops

"787" --> Cheapest Fligths

A medal

    |@@@@|     |####|
    |@@@@|     |####|
    |@@@@|     |####|
    \@@@@|     |####/
     \@@@|     |###/
      `@@|_____|##'
               (O)
            .-'''''-.
      .'  * * *  `.
     :  *       *  :
    : ~ A S C I I ~ :
    : ~ A W A R D ~ :
     :  *       *  :
      `.  * * *  .'
        `-.....-'

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