add js solution for findMaxForm

Author: jackeyjia

problems/0474.一和零.md

@@ -244,6 +244,35 @@ func max(a,b int) int {
 }
 ```
 
+Javascript：
+```javascript
+const findMaxForm = (strs, m, n) => {
+    const dp = Array.from(Array(m+1), () => Array(n+1).fill(0));
+    let numOfZeros, numOfOnes;
+
+    for(let str of strs) {
+        numOfZeros = 0;
+        numOfOnes = 0;
+    
+        for(let c of str) {
+            if (c === '0') {
+                numOfZeros++;
+            } else {
+                numOfOnes++;
+            }
+        }
+
+        for(let i = m; i >= numOfZeros; i--) {
+            for(let j = n; j >= numOfOnes; j--) {
+                dp[i][j] = Math.max(dp[i][j], dp[i - numOfZeros][j - numOfOnes] + 1);
+            }
+        }
+    }
+
+    return dp[m][n];
+};
+```
+
 
 
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