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feat: add js/ts solutions to lc problem: No.0476 (doocs#3441)

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`@@ -122,6 +122,48 @@ function findComplement(num: number): number {`
`122`	`122`	`}`
`123`	`123`	```
`124`	`124`
	`125`	`+#### JavaScript`
	`126`	`+`
	`127`	+```js
	`128`	`+/**`
	`129`	`+ * @param {number} num`
	`130`	`+ * @return {number}`
	`131`	`+ */`
	`132`	`+var findComplement = function (num) {`
	`133`	`+ return num ^ (2 ** num.toString(2).length - 1);`
	`134`	`+};`
	`135`	+```
	`136`	`+`
	`137`	`+<!-- tabs:end -->`
	`138`	`+`
	`139`	`+<!-- solution:end -->`
	`140`	`+`
	`141`	`+<!-- solution:start -->`
	`142`	`+`
	`143`	`+### 方法二:位运算(取反+按位与)`
	`144`	`+`
	`145`	`+<!-- tabs:start -->`
	`146`	`+`
	`147`	`+#### TypeScript`
	`148`	`+`
	`149`	+```ts
	`150`	`+function findComplement(num: number): number {`
	`151`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`152`	`+}`
	`153`	+```
	`154`	`+`
	`155`	`+#### JavaScript`
	`156`	`+`
	`157`	+```js
	`158`	`+/**`
	`159`	`+ * @param {number} num`
	`160`	`+ * @return {number}`
	`161`	`+ */`
	`162`	`+function findComplement(num) {`
	`163`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`164`	`+}`
	`165`	+```
	`166`	`+`
`125`	`167`	`<!-- tabs:end -->`
`126`	`168`
`127`	`169`	`<!-- solution:end -->`

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`@@ -116,6 +116,48 @@ function findComplement(num: number): number {`
`116`	`116`	`}`
`117`	`117`	```
`118`	`118`
	`119`	`+#### JavaScript`
	`120`	`+`
	`121`	+```js
	`122`	`+/**`
	`123`	`+ * @param {number} num`
	`124`	`+ * @return {number}`
	`125`	`+ */`
	`126`	`+var findComplement = function (num) {`
	`127`	`+ return num ^ (2 ** num.toString(2).length - 1);`
	`128`	`+};`
	`129`	+```
	`130`	`+`
	`131`	`+<!-- tabs:end -->`
	`132`	`+`
	`133`	`+<!-- solution:end -->`
	`134`	`+`
	`135`	`+<!-- solution:start -->`
	`136`	`+`
	`137`	`+### Solution 2: Bit Manipulation. Inversion + AND`
	`138`	`+`
	`139`	`+<!-- tabs:start -->`
	`140`	`+`
	`141`	`+#### TypeScript`
	`142`	`+`
	`143`	+```ts
	`144`	`+function findComplement(num: number): number {`
	`145`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`146`	`+}`
	`147`	+```
	`148`	`+`
	`149`	`+#### JavaScript`
	`150`	`+`
	`151`	+```js
	`152`	`+/**`
	`153`	`+ * @param {number} num`
	`154`	`+ * @return {number}`
	`155`	`+ */`
	`156`	`+function findComplement(num) {`
	`157`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`158`	`+}`
	`159`	+```
	`160`	`+`
`119`	`161`	`<!-- tabs:end -->`
`120`	`162`
`121`	`163`	`<!-- solution:end -->`

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`@@ -0,0 +1,7 @@`
	`1`	`+/**`
	`2`	`+ * @param {number} num`
	`3`	`+ * @return {number}`
	`4`	`+ */`
	`5`	`+var findComplement = function (num) {`
	`6`	`+ return num ^ (2 ** num.toString(2).length - 1);`
	`7`	`+};`

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`@@ -0,0 +1,7 @@`
	`1`	`+/**`
	`2`	`+ * @param {number} num`
	`3`	`+ * @return {number}`
	`4`	`+ */`
	`5`	`+function findComplement(num) {`
	`6`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`7`	`+}`

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	`1`	`+function findComplement(num: number): number {`
	`2`	`+ return ~num & (2 ** num.toString(2).length - 1);`
	`3`	`+}`

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