Given a target sum and an array of positive integers, return true if any combination of numbers in the array can add to the target. Each number in the array may only be used once. Return false if the numbers cannot be used to add to the target sum.
subsetSum(2, [1,10,5,3]); // false
subsetSum(10, [1,10,5,3]); // true
subsetSum(9, [1,10,5,3]); // true
You're an industrious programmer that lives off the grid. The local well that you use to fetch water has gone dry, so you've decided to collect rain water to filter; however, your collection device isn't flat.
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water your collection device is able to trap after raining.
| let first = true //Global variable | |
| render(){ | |
| if (first){ | |
| first = false | |
| socket.on('beat', count => { | |
| this.playDrums() | |
| }) | |
| } |
| render(){ | |
| socket.on('beat', count => { | |
| this.playDrums() //Play selected drum sounds on every beat from the pulse emitting from the server | |
| }) | |
| return ( | |
| <div> | |
| <MIDISounds ref={(ref) => (this.midiSounds = ref)} appElementName="app" | |
| drums={[70, 80, 100, 175, 75, 65, 62, 52, 5, 10, 20, 45, 1, 15, 35, 55]} /> //Library used to play midi drum sounds | |
| </div> | |
| ) |