solution_1260,1394,1550

JinHaLim/Array/solution_1260.js

@@ -0,0 +1,30 @@
+/**
+ * @param {number[][]} grid
+ * @param {number} k
+ * @return {number[][]}
+ */
+var shiftGrid = function(grid, k) {
+    let copyGrid = new Array();
+    copyGrid = grid.slice(0);
+    let y = grid[0].length;
+    const result = [];
+    grid = grid.join(',').split(',');
+    for (let i = 0; i < grid.length; i++) {
+        grid[i] =  +(grid[i]);
+    }
+    if (k > grid.length) {
+        k = Math.floor(k % grid.length);
+    }
+    const sliceArr = grid.slice(grid.length-k).reverse();
+    grid = grid.slice(0,grid.length-k) ;
+    for (let i = 0; i < k; i++) {
+        grid.splice(0,0,sliceArr[i])
+    }
+    while (grid.length) {
+        result.push(grid.splice(0,y));
+    }
+    return result;
+};
+
+console.log(shiftGrid([[1,2,3],[4,5,6],[7,8,9]],1));
+console.log(shiftGrid([[3,8,1,9],[19,7,2,5],[4,6,11,10],[12,0,21,13]],4));

JinHaLim/Array/solution_1394.js

@@ -0,0 +1,29 @@
+/**
+ * @param {number[]} arr
+ * @return {number}
+ */
+var findLucky = function(arr) {
+    let lucky = [];
+    let freqMap = arr.reduce((acc,curr)=>{
+        if (acc.has(curr)) {
+            acc.set(curr,acc.get(curr)+1);
+        }
+        else{
+            acc.set(curr,1);
+        }
+        return acc;
+    },new Map());
+    let keys = [...freqMap.keys()];
+    let values = [...freqMap.values()];
+    for (let i = 0; i < freqMap.size; i++) {
+        if (keys[i] === values[i]) {
+            lucky.push(keys[i]);
+        }
+    }
+    if (lucky.length === 0) {
+        return -1;
+    }
+    return Math.max.apply(null,lucky);
+};
+console.log(findLucky([2,2,3,4]));
+console.log(findLucky([4,3,2,2,4,1,3,4,3]))

JinHaLim/Array/solution_1550.js

@@ -0,0 +1,21 @@
+/**
+ * @param {number[]} arr
+ * @return {boolean}
+ */
+var threeConsecutiveOdds = function(arr) {
+    let oddArr = [];
+    for (let i = 0; i < arr.length; i++) {
+        if (arr[i] %2 === 1) { //odd
+            oddArr.push(arr[i]);
+        }
+        else{
+            oddArr = [];
+        }
+        if (oddArr.length === 3) {
+            return true;
+        }
+    }
+    return false;
+};
+console.log(threeConsecutiveOdds([2,6,4,1]));
+console.log(threeConsecutiveOdds([1,2,34,3,4,5,7,23,12]))