| 682 | Baseball Game | ArrayStackSimulation | Easy |
| 693 | Binary Number with Alternating Bits | Bit Manipulation | Easy |
| 696 | Count Binary Substrings | Two PointersString | Easy |
| 697 | Degree of an Array | ArrayHash Table | Easy |
| 700 | Search in a Binary Search Tree | TreeBinary Search TreeBinary Tree | Easy |
| 703 | Kth Largest Element in a Stream | TreeDesignBinary Search Tree+3 | Easy |
| 704 | Binary Search | ArrayBinary Search | Easy |
| 705 | Design HashSet | ArrayHash TableLinked List+2 | Easy |
| 706 | Design HashMap | ArrayHash TableLinked List+2 | Easy |
| 709 | To Lower Case | String | Easy |
| 717 | 1-bit and 2-bit Characters | Array | Easy |
| 724 | Find Pivot Index | ArrayPrefix Sum | Easy |
| 728 | Self Dividing Numbers | Math | Easy |
| 733 | Flood Fill | ArrayDepth-First SearchBreadth-First Search+1 | Easy |
| 744 | Find Smallest Letter Greater Than Target | ArrayBinary Search | Easy |
| 746 | Min Cost Climbing Stairs | ArrayDynamic Programming | Easy |
| 747 | Largest Number At Least Twice of Others | ArraySorting | Easy |
| 748 | Shortest Completing Word | ArrayHash TableString | Easy |
| 762 | Prime Number of Set Bits in Binary Representation | MathBit Manipulation | Easy |
| 766 | Toeplitz Matrix | ArrayMatrix | Easy |
| 771 | Jewels and Stones | Hash TableString | Easy |
| 783 | Minimum Distance Between BST Nodes | TreeDepth-First SearchBreadth-First Search+2 | Easy |
| 796 | Rotate String | StringString Matching | Easy |
| 804 | Unique Morse Code Words | ArrayHash TableString | Easy |
| 806 | Number of Lines To Write String | ArrayString | Easy |
| 812 | Largest Triangle Area | ArrayMathGeometry | Easy |
| 819 | Most Common Word | ArrayHash TableString+1 | Easy |
| 821 | Shortest Distance to a Character | ArrayTwo PointersString | Easy |
| 824 | Goat Latin | String | Easy |
| 830 | Positions of Large Groups | String | Easy |
| 832 | Flipping an Image | ArrayTwo PointersBit Manipulation+2 | Easy |
| 836 | Rectangle Overlap | MathGeometry | Easy |
| 844 | Backspace String Compare | Two PointersStringStack+1 | Easy |
| 859 | Buddy Strings | Hash TableString | Easy |
| 860 | Lemonade Change | ArrayGreedy | Easy |
| 867 | Transpose Matrix | ArrayMatrixSimulation | Easy |
| 868 | Binary Gap | Bit Manipulation | Easy |
| 872 | Leaf-Similar Trees | TreeDepth-First SearchBinary Tree | Easy |
| 876 | Middle of the Linked List | Linked ListTwo Pointers | Easy |
| 883 | Projection Area of 3D Shapes | ArrayMathGeometry+1 | Easy |
| 884 | Uncommon Words from Two Sentences | Hash TableStringCounting | Easy |
| 888 | Fair Candy Swap | ArrayHash TableBinary Search+1 | Easy |
| 892 | Surface Area of 3D Shapes | ArrayMathGeometry+1 | Easy |
| 896 | Monotonic Array | Array | Easy |
| 897 | Increasing Order Search Tree | StackTreeDepth-First Search+2 | Easy |
| 905 | Sort Array By Parity | ArrayTwo PointersSorting | Easy |
| 908 | Smallest Range I | ArrayMath | Easy |
| 914 | X of a Kind in a Deck of Cards | ArrayHash TableMath+2 | Easy |
| 917 | Reverse Only Letters | Two PointersString | Easy |
| 922 | Sort Array By Parity II | ArrayTwo PointersSorting | Easy |