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feat: add ts solution to lc problem: No.1761 #1549

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Original file line number Diff line number Diff line change
Expand Up @@ -54,9 +54,11 @@

**方法一:暴力枚举**

我们先将所有边存入邻接矩阵 $g$ 中,再将每个节点的度数存入数组 $deg$ 中。
我们先将所有边存入邻接矩阵 $g$ 中,再将每个节点的度数存入数组 $deg$ 中。初始化答案 $ans=+\infty$。

然后枚举所有的三元组 $(i, j, k)$,其中 $i \lt j \lt k$,如果 $g[i][j] = g[j][k] = g[i][k] = 1$,则说明这三个节点构成了一个连通三元组,此时更新答案为 $deg[i] + deg[j] + deg[k] - 6$。返回最小的符合条件的答案即可。
然后枚举所有的三元组 $(i, j, k)$,其中 $i \lt j \lt k$,如果 $g[i][j] = g[j][k] = g[i][k] = 1$,则说明这三个节点构成了一个连通三元组,此时更新答案为 $ans = \min(ans, deg[i] + deg[j] + deg[k] - 6)$。

枚举完所有的三元组后,如果答案仍然为 $+\infty$,说明图中不存在连通三元组,返回 $-1$,否则返回答案。

时间复杂度 $O(n^3)$,空间复杂度 $O(n^2)$。其中 $n$ 为节点数。

Expand Down Expand Up @@ -192,6 +194,35 @@ func min(a, b int) int {
}
```

### **TypeScript**

```ts
function minTrioDegree(n: number, edges: number[][]): number {
const g = Array.from({ length: n }, () => Array(n).fill(false));
const deg: number[] = Array(n).fill(0);
for (let [u, v] of edges) {
u--;
v--;
g[u][v] = g[v][u] = true;
++deg[u];
++deg[v];
}
let ans = Infinity;
for (let i = 0; i < n; ++i) {
for (let j = i + 1; j < n; ++j) {
if (g[i][j]) {
for (let k = j + 1; k < n; ++k) {
if (g[i][k] && g[j][k]) {
ans = Math.min(ans, deg[i] + deg[j] + deg[k] - 6);
}
}
}
}
}
return ans === Infinity ? -1 : ans;
}
```

### **...**

```
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,35 @@ func min(a, b int) int {
}
```

### **TypeScript**

```ts
function minTrioDegree(n: number, edges: number[][]): number {
const g = Array.from({ length: n }, () => Array(n).fill(false));
const deg: number[] = Array(n).fill(0);
for (let [u, v] of edges) {
u--;
v--;
g[u][v] = g[v][u] = true;
++deg[u];
++deg[v];
}
let ans = Infinity;
for (let i = 0; i < n; ++i) {
for (let j = i + 1; j < n; ++j) {
if (g[i][j]) {
for (let k = j + 1; k < n; ++k) {
if (g[i][k] && g[j][k]) {
ans = Math.min(ans, deg[i] + deg[j] + deg[k] - 6);
}
}
}
}
}
return ans === Infinity ? -1 : ans;
}
```

### **...**

```
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
function minTrioDegree(n: number, edges: number[][]): number {
const g = Array.from({ length: n }, () => Array(n).fill(false));
const deg: number[] = Array(n).fill(0);
for (let [u, v] of edges) {
u--;
v--;
g[u][v] = g[v][u] = true;
++deg[u];
++deg[v];
}
let ans = Infinity;
for (let i = 0; i < n; ++i) {
for (let j = i + 1; j < n; ++j) {
if (g[i][j]) {
for (let k = j + 1; k < n; ++k) {
if (g[i][k] && g[j][k]) {
ans = Math.min(ans, deg[i] + deg[j] + deg[k] - 6);
}
}
}
}
}
return ans === Infinity ? -1 : ans;
}