Create 1906-minimum-absolute-difference-queries.js

Author: everthis

1906-minimum-absolute-difference-queries.js

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+/**
+ * @param {number[]} nums
+ * @param {number[][]} queries
+ * @return {number[]}
+ */
+const minDifference = function(nums, queries) {
+    const res = [], cnt = Array.from({ length: nums.length + 1 }, () =>  Array(101).fill(0))
+    
+    for (let i = 0; i < nums.length; ++i) {
+        for (let j = 1; j <= 100; ++j) {
+            cnt[i + 1][j] = cnt[i][j] + (nums[i] == j);          
+        }      
+    }
+
+
+    for (let i = 0; i < queries.length; ++i) {
+        let prev = 0, delta = Infinity;
+        for (let j = 1; j <= 100; ++j)
+            if (cnt[queries[i][1] + 1][j] - cnt[queries[i][0]][j]) {
+                delta = Math.min(delta, prev == 0 ? Infinity : j - prev);
+                prev = j;
+            }
+        res.push(delta == Infinity ? -1 : delta);
+    }
+    return res;
+};